Vicki is finalising her divorce and has a new man in her life, Alexis lands a job as a news correspondent, Tamra and Gretchen bury the hatchet, and former actress Heather Dubrow becomes OC's newest housewife.

At Vicki's tension-filled dinner party, Peggy and Alexis reach a boiling point, and Peggy decides to close the chapter on her friendship with Alexis and the other women. Gretchen poses for a nude photo shoot for a charitable cause, while OC's newest housewife, Heather, has it all and isn't afraid to let everyone know it.

Tamra's budding friendship with Gretchen affects Vicki; Alexis and Heather try to make amends over lunch; Vicki and her daughter have a deep conversation about Vicki's new boyfriend; and Slade tries to launch a new career as a comic.

Tamra tries to convince Vicki that her friendship with Gretchen won't overshadow their bond, while on the other side of town, Alexis and Heather meet for a doomed lunch to try and work out their differences. Vicki and her daughter Briana have a heart-to-heart about Vicki's new boyfriend.

Heather tells Tamra that she and Vicki were the butt of Slade's jokes in his insulting comedy routine, and Tamra doesn't think it's funny at all. When Tamra tells Vicki about Slade's comedy routine, she feels insulted, but is distracted by her daughter Briana's upcoming thyroid surgery, which could reveal if she has cancer.

The Bunco Party takes an uncomfortable turn when Slade and some of the O.C. men, invited by Tamra, join the party. Confronted immediately about the insulting things he said about Vicki in his comedy routine, Slade aggressively defends himself.

A nervous Alexis undergoes sinus surgery, where her plastic surgeon additionally removes a bump from her nose. Meanwhile, Vicki is distraught as Briana's thyroid surgery went worse than expected. Tamra visits her doctor and decides to have her breast implants removed.

Tamra, Gretchen and Heather compete in a charity Mud Run, Alexis has her nose cast removed, and Vicki gets answers about Briana's health.

Alexis plans a camping trip near Santa Barbara, but pulls out. Gretchen skips the trip due to her Pussycat Dolls performance, and Tamra recovers at home from her surgery.

Heather goes for an audition but is torn about being a working actress and raising four children simultaneously. Alexis is set to hire a coach to help her dreams of being a television host.

In Las Vegas, and in front of the other housewives, Gretchen performs with the Pussycat Dolls. In spite of Jim's objections, Alexis continues to follow her career path, while Vicki treats Briana and Ryan to dinner.

Tamra and Vicki host a formal wine party where Vicki announces Briana's big news, and Gretchen talks with Tamra over her concerns of ever marrying Slade.

Slade's engagement ring shopping plans; Alexis throws a birthday party for her twins; Tamra gets a tattoo removed; Vicki and Briana fight.

Brooks supports Vicki after her huge argument with Briana. Heather decides to take Terry's surname. Gretchen and Slade seek counselling and Alexis attempts to patch things up with Tamra.

The ladies journey into the rainforest of Costa Rica. They scream with excitement as they zip-line through the jungle canopy, while the changing nature of their friendships has them screaming at each other.

The tension in Costa Rica continues, forcing Alexis to leave early after the group gang up on her and the remaining ladies go white water rafting, with the experience resulting in Vicki having an emotional breakdown.

Alexis reports on-location for the news; Gretchen discovers Slade's plan to propose leading to a confrontation; Eddie surprises Tamra with a surprise romantic getaway.

Heather celebrates her new last name with a fabulous party; Vicki flaunts an expensive gift from Brooks, which exacerbates the tension between her and Briana.

Heather takes the girls out for a night of bowling and champagne, Alexis continues to work at the news station, against the wishes of Jim, and Tamra and Vicki romantic relationships continue to grow.

Drama continues at Heather's party; Sarah acts strangely; Tamra and Gretchen commemorate their new friendship with a gift; Jim confronts Terry about calling Alexis phony; Vicki and Tamra fight.

Alexis demands an apology for being called phony; Gretchen accuses Vicki of hypocrisy regarding her relationship with Brooks.

Brooks gives the women a piece of his mind; when Briana joins the group, new questions are raised about Vicki's fidelity and Brooks' motives.

Never-aired footage from season seven includes a double date with Vicki, Brooks, Gretchen and Slade; reunion showdowns; Heather and Alexis pursue their dream careers.

Vicki's daughter gives birth to a baby boy. Tamra moves in with her new business partner and fiancée. Heather hosts a clambake and doesn't invite Alexis, which leads to tension in the group.

Vicki becomes the topic of gossip; Vicki and Tamra try to repair their friendship; Gretchen visits Slade.

Alexis is invited to be the first to meet Vicki's new grandson; Tamra tries to repair her relationship with Vicki; Heather wants to have her home featured in a magazine.

Vicki invites Alexis to a party at Tamra's new gym; Gretchen and Slade deal with personal issues; Tamra rethinks her decision to invite Alexis to the party when things get out of control.

Tamra's explosion at the party has widespread effects, leaving Vicki torn between Tamra and Alexis; Gretchen goes to New York to support Slade; Lydia encourages Alexis to make amends.

Alexis struggles after the events at Tamra's party; Vicki doesn't show at the new wine business, leaving Tamra angry; Lydia celebrates with her mom; Heather receives an exciting offer, which is soured by Terry.

A fight between Tamra and Vicki ends their Malibu trip; Alexis and Jim open their trampoline park; Heather and Terry hit a roadblock.

While Heather is in Hollywood filming a guest role on Hot In Cleveland, Terry struggles at home alone with the kids. Meanwhile, Alexis pursues her own acting career in Orange County. Gretchen and Slade ruffle some feathers when they are inconsiderate on Heather’s big day. Then, Lydia confronts her mother about her marijuana smoking habit.

Vicki is torn between spending time with Brooks or babysitting her grandson; Lydia convinces Alexis to talk to Tamra; Gretchen visits a fertility doctor; Tamra gives a speech at the Los Angeles Women's Expo.

Tamra and Alexis confront each other; Heather and Gretchen disagree while planning Tamra's bachelorette party; as the ladies head to Mexico, Gretchen gets some shocking information about Vicki's past.

While still in Puerto Vallarta, Vicki, Lydia and Tamra continue their night away partying — while Heather and Gretchen continue to sit back in the limo. Gretchen tells Vicki how much she was annoyed by her antics but Tamra shocks the ladies when she tells the specifics of her past to Gretchen. Back at the resort, Mexican strippers arrive to spice up the night but Lydia is a bit nervous about the whole situation. Alexis, home in Orange County, asks Jim for an item that he is unwilling to purchase.

Heather and Alexis meet at the coffee house to fix their friendship. Briana prepares emotionally for Ryan's upcoming deployment. All the ladies, and husbands, come together for Lydia's salsa dance party but Lydia brings her claws out once Slade starts to make rude remarks. Brooks surprises Vicki at the party with flowers and the room begins to fill with rumors regarding her love life. Gretchen is told that Alexis will be at Tamra's wedding dress shopping trip and questions whether she will attend or not.

Tamra is frustrated with the slow progress on her fitness studio, while Heather's acting career speeds ahead as she lands another guest role on a popular sitcom. Tamra shops for a wedding dress with the whole gang, but her beautiful day turns ugly when Lauri drops a bomb on Vicki about who Brooks is spending time with. After dinner, Tamra and Heather question Gretchen's honesty.

Lydia goes on a ski vacation with the ladies, Heather and Gretchen get into a heated argument, and Tamra confronts Vicki about the rumours she's spreading.

Lauri's accusations cause a fight; Gretchen questions her friendship with Tamra; Heather guest stars on a new sitcom.

Alexis comes face-to-face with Gretchen; Heather and Terry receive a surprising offer; Vicki struggles to keep things professional with Brooks; Gretchen plans a surprise marriage proposal for Slade.

Gretchen proposes to Slade; Heather and Terry tell the kids that they've sold the house; Vicki hears Slade insult her on his radio show; Vicki's Winter Wonderland party is full of surprises.

Gretchen and Heather argue; when her husband faces the ladies, Alexis is brought to tears; Briana's husband verbally attacks a party guest; Tamra and Gretchen accuse each other of lies; Vicki and Lydia ambush Slade.

Gretchen and Vicki vie for Tamra's friendship; Lydia is forced to defend herself; Lauri Petersen returns.

Gretchen confronts the other ladies; Heather confronts Gretchen about auditions; Gretchen is reduced to tears.

Briana and Vicki's boyfriend confront each other, leaving Vicki in tears.

Never-before-seen footage, including Alexis preparing for her audition, Lydia confessing about herself and Doug, and Vicki and Gretchen battling for the title of Tamra's BFF.

Vicki tries to move forward when her divorce is finalized in the Season 9 opener. Also: Tamra's gym is open for business; and Heather invites Vicki and Tamra to Hawaii for a weekend getaway, but friction develops over wardrobe choice.

A Hawaii getaway concludes with questions posed to Vicki about her relationship. Back in the OC, Tamra hosts a spooky get-together featuring tarot-card readings, and newbie housewife Shannon Beador invites the ladies to a home-cooked meal.

Dinner continues at Shannon's OC abode. In addition, Shannon's marriage is dissected by the others; Heather departs for the holidays; and the ladies address their grievances at a "fakes-giving" feast.

Tamra and Heather meet Lizzie, a former beauty queen; Shannon is surprised; Vicki focuses on her business; Tamra and Eddie talk.

Shannon and Vicki connect over holistic healing. Meanwhile, Heather organizes a hoedown-theme bash; Tamra pressures her son to be more responsible; and tension mars a holiday outing.

Tension simmers between Heather and Shannon in the wake of their dispute over seating at a dinner. Elsewhere, Vicki struggles with her daughter's decision to move; and Heather throws a hoedown bash, where a mechanical-bull mishap creates drama.

Vicki travels to Oklahoma to help her daughter Briana look for a house. Heather and Lizzie meet with their children. Shannon and Heather also meet to discuss their issues. Shannon invites Lizzie for a makeup lesson at her house, Tamra discovers something shocking about her son.

Drama marks Shannon's holiday bash. Elsewhere, a downcast Vicki deals with Briana's move to Oklahoma, and a harsh reality hits Tamra.

Tamra reveals her real reason for being upset with Heather. Meanwhile, Briana and Ryan surprise Vicki with the gender of their baby and later, Shannon turns to Tamra for support when her husband, David, sends her a shocking e-mail about their relationship.

Shannon confides in Tamra, only to discover rumors are spreading about her marriage. Meanwhile, Lizzie finds herself in the middle of Shannon and Heather's feud; Vicki and Brooks vacation in Puerto Vallarta; and Tamra tries to teach Eddie about newborns.

A banished Shannon journeys to join Vicki and Brooks in Puerto Vallarta. Meanwhile, Lizzie struggles to juggle work and family; Heather hires a personal chef; and Tamra's effort to teach Eddie a lesson in fatherhood backfires.

Shannon and David try to get back on the right track with Vicki's help; Heather's family expands.

Lizzie invites the ladies to a dinner party, where Heather and Shannon come face-to-face.

Tension rises between Shannon and Heather at Lizzie's dinner party; Vicki and Briana see a therapist; Ryan's news shocks Tamra.

Heather and Tamra decide to take a trip to Bali; Lizzie has a terrible birthday; Heather throws a Valentine's Day dinner party.

Balinese bliss becomes a rumble in the jungle when the ladies set out on a trip to Bali. Heather and Shannon hope for peace and relaxation, but things escalate when Shannon gets some shocking news. Meanwhile, Vicki hears about a scandalous statement allegedly made at the Valentine's Day dinner and Lizzie reveals her true thoughts about Tamra.

The ladies enjoy their time in Bali; Shannon and Lizzie realize Tamra has poisoned their new friendship; Vicki hears that Tamra has been talking about Brooks; the ladies confront Tamra.

At dinner at Vicki's, tensions still run high; Tamra faces Brooks; an apology from Shannon's boyfriend starts a fight; Vicki's daughter and Tamra's son leave O.C.

There are laughs, tears and tirades in part two of the reunion as Shannon explains her holistic ways as only Shannon can do. The ladies argue over whether Lizzie is more drama queen than beauty queen, and the gloves are off when Tamra faces her accusers on whether or not she's to blame for much of this season's conflicts.

Never-before-seen footage from season nine includes a painting party and a dinner in Bali; Vicki and Brooks attend a therapy session; Tamra takes baby Astro out on the town.

Andy Cohen hosts as the California ladies come together to deal with the big issues and conflicts of the season.

Season 10 kicks off with new boobs, a new housewife and a whole new set of problems for the ladies of the OC. Vicki announces that her boyfriend Brooks is now living with her, but that's not her biggest news when it comes to Brooks. Heather is busy building the dream house of a lifetime, while Shannon and David are trying to repair their broken marriage. New housewife, Meghan King Edmonds is ready to play ball, and Tamra adds new boobs to her chest while also getting something off her chest with Vicki.

Shannon and David are pushed to new limits as they finish up the last day of their couples retreat.  Meanwhile, having returned from Puerto Vallarta, Vicki throws a Fiesta party where a piñata isn't the only thing that's bashed. At the party, when Heather introduces her friend Meghan to the group, Shannon realizes that she has a history with Meghan. Plus, Vicki and Tamra's shaky friendship becomes even more complicated as the two come face-to-face after having avoided each other for the past six months.

Heather and the ladies travel to Napa to celebrate the launch of her new sparkling wine Collette. OC transplant Meghan is excited for her first trip to wine country, but is also apprehensive after her recent run-in with Shannon. Shannon continues to struggle with her emotions regarding her husband David's affair. Also, Tamra reveals her newfound relationship with the lord while also trying to draw some much needed attention to her new boobs.

A trip to Napa concludes with tensions at a high. Back in the OC, Vicki and Brooks consider some unconventional cancer treatments, Meghan puts the final touches on her first OC charity event while Heather faces the harsh reality of going over budget on her dream home. Meanwhile, Shannon receives some shocking news and unresolved issues between her and Meghan become the topic of the ladies' scrutiny at Meghan's JDRF charity event.

Vicki gets a phone call that forever changes her life. Shannon offers an olive branch to Meghan when she hosts a Bunco party at her house. Meanwhile, Meghan moves into another house and Heather has an unorthodox date night with Terry that gets a little bloody.

Vicki's mother's passing has sent shock waves throughout the OC, causing the women all to take a deeper look at their family lives. While Vicki travels to Chicago to mourn, Tamra heads north to celebrate the birth of her granddaughter. Meanwhile, Shannon continues to heal her marriage with David. Meghan tries to create a lasting memory for her stepdaughter Hayley.

Vicki enlists the powers of a medium to try and communicate with her mother. Shannon discovers that to lose physical weight, she has to do more than just exercise, she must deal with the weight of her emotions too. Meghan tries to teach her step daughter responsibility but learns a lesson about parenting instead.  While Tamra and Eddie struggle to work together at the gym, Heather is eager to start a new project with Terry. All the ladies come together for a fun night of bowling and a surprise announcement.

When Meghan hosts a couple's game night, her husbands' absence becomes fair game for gossip with the other ladies. Meanwhile, Shannon and David meet with their therapist. Later, the women head off for a tropical get away to French Polynesia, but the road to paradise gets bumpy when Meghan and Vicki don't see eye to eye.

It's not all fun in the Tahitian sun as the women of the OC travel to the island of Moorea. When they go swimming with sharks, Meghan discovers that the real danger isn't in the water. Later, the group splits up for dinner leaving Shannon, Vicki and Tamra to not only take numerous shots at the bar, but also a few shots at Heather and Meghan's friendship.

Hung-over from a night of drinking, Vicki and Shannon deepen their friendship by discussing the details of David's affair.  Meanwhile, the other ladies head out on an excursion that puts them in deep water. Later Tamra, wanting to get everything out in the open, sparks a controversy over girl code and pot stirring. Meghan surprises the ladies at the final dinner.

Back in the OC, Shannon and David discover that disciplining their kids is easier said than done. Vicki learns that Brooks has made a life altering decision, to stop chemo and try a radical new approach. Meanwhile, Tamra's psychic makes a shocking claim leaving the ladies in disbelief.

Meghan, Heather, Tamra, and Shannon head to NASCAR while Vicki enjoys a birthday getaway with Brooks. Later, Shannon tries to put on a happy face during her birthday dinner with David and her girls. Heather throws a luncheon at her unfinished home, where Meghan confronts the OG of the OC.

Heather's luncheon ends with a bang as Vicki storms off, upset with Meghan for continually questioning Brooks' cancer treatment. Shannon visits Dr. Moon to help deal with pent up resentment. Tamra hosts a wild "Sex Party" that has Heather covered in blood and Vicki going for blood as she not only confronts Meghan face-to-face, but also goes after Meghan's husband, Jim Edmonds.

The day after Tamra's sex party, the ladies are still in disbelief over Vicki's attack on Meghan. Meanwhile, Shannon's kids cook up a plan to improve their parent's troubled relationship. Tamra and Eddie's date night turns sour when she comes clean about financially helping out her son. Plus, Vicki leaves the OC for a visit with Briana in Oklahoma, but underlying tensions about Brooks brings the trip to an explosive end.

When Shannon throws an Aries themed party, Brooks finally gets his chance to confront Meghan face-to-face for her relentless digging into his past. And an off-handed comment by Brooks throws Tamra into a rage.

Shannon's Aries party continues with Vicki and Brooks making an early exit leaving the other ladies questioning Brooks' behavior and Vicki's involvement. Heather and Terry disagree over a design for the new house, while Tamra shows her son Ryan his new home in the OC. Meanwhile, Shannon begins to question her friendship with Vicki.

As Shannon seeks to make sense of her friendships, Tamra looks to a higher source to improve her son's troubled relationship.  Meanwhile, Heather's Evine launch in Minnesota takes a turn for the worse as Terry botches the rehearsal. After a trip to the doctor with Brooks, Vicki tries to put an end to the cancer debate, but when Meghan hosts a viewing party in celebration of Heather's big night, a new revelation about Brooks has everyone stunned.

Vicki's daughter Briana visits the OC and meets Tamra for lunch with some shocking new information about Brooks. Shannon's rekindled relationship with Heather and Tamra allows her to confide in the ladies in a way she never thought possible. The ladies prep for Tamra's baptism in some unconventional ways.

In the season finale, the ladies gather together to witness Tamra's baptism, but with the constant questions and confusion surrounding Brooks' cancer, Vicki is the one who feels crucified. And after an evening of avoidance, Shannon and Vicki come face-to-face when Shannon discovers that Vicki has committed the ultimate betrayal.

The reunion kicks off with the Housewives gathering on the couch to rehash the past year. Meghan makes her mark on her first reunion by clashing with Vicki over her step-mom comments and demonstrating what "Judgey Eyes" really looks like. Tamra reveals the heartbreaking family drama she has been keeping secret for the past year. Plus, a Housewife from the past speaks her mind about Tamra's religious transformation and Vicki shares hilarious memories of her late mother.

On part two of the reunion, the ladies get wild and crazy looking back at the best OMG moments of season 10. While Shannon faces scrutiny about her marriage and David's affair, tensions rise when Heather gets heated about Vicki's betrayal of Tamra. Jim Edmonds also joins the ladies on the couch and is put in the hot seat about his marriage to Meghan. Briana makes an appearance and is no holds barred when it comes to her opinions about Brooks.

The reunion concludes as the women and Briana confront Vicki head on with their doubts about Brooks' cancer. Shannon provides shocking details regarding the validity of the PET/CT Scan, Tamra and Heather confront Vicki about the possibility of being blackmailed, and all of the ladies have strong reactions to Andy's taped interview with Brooks. Then, Vicki makes a stunning revelation that has everyone doubting what they've heard.

The half-hour special delves deep and showcases never-before-seen footage from Andy's sit down interview with Brooks Ayers, originally seen in the reunion, where Brooks addresses the ladies' allegations regarding his health. Andy confronts Brooks on the season's burning questions including why he avoided seeing Shannon's doctor, why he and Vicki told different stories about his treatment, and the claim that announcing his cancer diagnosis may have been an attempt to control his damaged public image. Brooks also reveals his true feelings about each of the ladies, including Vicki's daughter Briana, and explains why he finally ended his relationship with OC matriarch Vicki.

The Orange County vault is opened with never-before-seen footage from season ten including Shannon's unique ladies lunch, Vicki's night out and Heather's teachable moment to Meghan about the finer points of Botox. In Tahiti, the women experience a wild ride, and back in Orange County, Heather proves the devil is in the details when building a mega home. Plus, secrets are revealed with more reunion footage addressing Vicki's scandalous history with Brooks.

The ladies kick off an explosive 11th season with an epic boat party filled with tensions at an all-time high as Vicki fights to win the ladies back after a year of lies left her friendless and alone. Heather's mansion is still a work in progress, and so is her relationship with her workaholic husband Terry. Shannon's marriage is on more solid footing, so it's time to look for a new home for her family. Unable to have children the old fashioned way, Meghan starts in vitro fertilization (IVF) with no help from husband Jimmy. And new housewife Kelly Dodd brings her big personality to the party, but her loud mouth gets her in big trouble.

While Heather travels to Turks and Caicos to help Terry reconnect with their kids, Tamra tries to save Ryan and Sarah's relationship. Meanwhile, Kelly decides to befriend Vicki against Meghan's warnings. As Shannon continues to rebuild her relationship with David, Vicki does the same with her business. Later, Meghan invites the ladies over to her new house to demolish her kitchen; however it's Kelly who seems to smash her chances of friendship with the girls when she reveals she has befriended Vicki.

Vicki and Briana take a road trip from Oklahoma to Orange County when Vicki finally gets her wish, her daughter is moving back.  But Briana's homecoming is not all that Vicki hoped. Meghan faces her fear of needles head-on when she begins her IVF shots without Jimmy, as Heather struggles with her children's expectations about how much they see their father. Kelly throws a beach party to get to know all the women better and Vicki and Tamra pull their heads out of the sand to try and resolve the issues that have plagued them for the past year.

As Kelly's beach party moves indoors, Vicki and Shannon have a chilly face-off about the fate of their friendship. Meghan meets Jimmy's frozen sperm for the first time as the couple moves one step closer to starting their family. Heather laments how Terry's tough schedule is jeopardizing their family unit and Meghan advises Kelly to keep quiet when it comes to her opinions on Vicki. A medical emergency lands Briana in the hospital, leaving Vicki to step in as single grandma. Shannon enlists Tamra's help in making a tough decision regarding Vicki.

At Shannon's 70's-themed party, disco fever takes on a whole new meaning when Shannon gets into a heated argument with Kelly about her rumor-filled past. While Vicki juggles work, babysitting her grandsons and nursing Briana back to health, she still finds time to "whoop it up" with the ladies, at least the ones who are speaking to her. Heather confronts Terry about his lazy parenting after he schedules a work trip for Mother's Day. With Jimmy out-of-town again, Meghan looks for support from her friends during her IVF treatments. Tamra tries to help Kelly mend fences, but winds up stirring the pot instead.

In the wake of all hell breaking loose at Shannon's 70's party, Shannon heads to Dr. Moon to try a new remedy to remove toxins. Kelly tries to make amends by inviting Shannon to sit down and rehash the night. Meanwhile, Meghan travels to Washington, D.C., with Heather by her side, to speak on behalf of colorectal cancer. Tamra explores custom bikinis for her fitness competition and Vicki tours Briana's new house in the midst of renovations.

While Vicki revels in the return of her family to Orange County, Heather strives to find a work/life balance on the eve of her book launch. Kelly struggles to figure out Shannon's motive for setting her up and bonds with Vicki over their shared anger. Tamra plans a last hurrah for Meghan before she gets pregnant, but the sushi party goes off the rails when Kelly loses her cool and crosses a line.

After an explosive night at the sushi dinner, Heather and Tamra discuss Kelly's volatile behavior as Kelly regretfully turns to her friend Meghan and receives some tough love. Meanwhile, Meghan takes the next crucial step in her IVF process. Later, Shannon celebrates a night full of surprises with all her friends and family. Back in the OC, Vicki and Kelly have a party of their own and bond over being the odd women out.

While Shannon heads to Cabo with David, Tamra and Kelly join Vicki at the luxurious Merv Griffin estate in La Quinta, California to celebrate Vicki and Briana's upcoming birthdays. Heather and Terry enjoy a date night dinner where they discuss his busy schedule and her problems with Kelly. Later, Tamra arranges a meeting between Kelly and Heather to work out their differences before the ladies head to Glamis.

Tamra, Vicki, Heather and Kelly travel to Glamis to celebrate Eddie's birthday. While the trip is supposed to be down and dirty fun, Tamra and Heather are still wary of Kelly's filthy mouth. After a long RV ride down, the ladies finally get some fresh air and see what the motor sports mecca has to offer. The next day, the ladies set out to explore the dunes, leading to a ride they will never forget. Meanwhile back in Orange County, lives are forever changed as Meghan receives the results from her pregnancy test and Shannon's holistic home has finally sold, leaving the Beador's two weeks to move out.

As the women recover from the accident in Glamis, Tamra returns intent on carrying on with the trip. New alliances form in the wake of Meghan and Shannon's refusal to visit Vicki at the hospital. Back in the OC, Tamra contemplates postponing her fitness competition. While Meghan goes to Vicki's house to make amends, Shannon attempts to get back into her friends' good graces.

Shannon panics about her families' impending move, while her daughters prepare for an upcoming rock show. Vicki celebrates Briana's birthday and makes it uncomfortably clear she is ready to fill up her love tank. The ladies come over to help Shannon purge her outdated closet; however tensions run high over unresolved issues between Shannon and Kelly, as well as Tamra and Meghan. Friends and family gather to watch the Beador girls perform, but Shannon's night is rocked by a shocking allegation from an uninvited guest.

Michael and Kelly discuss the ups and downs of their relationship since separating, while Meghan goes to her first ultrasound appointment. Vicki gets asked to film a commercial for a cancer charity. Shannon packs up her old home and gives it a heartfelt "goodbye" while Tamra hosts Kelly, Vicki, and Heather for a day of pampering and luxury at Glen Ivy Spa. Unfortunately, things at the spa aren't as tranquil as expected when Kelly tearfully opens up about her rocky marriage.

Meghan throws a party to celebrate the grand opening of her candle store. Tensions ignite as Vicki threatens to expose a secret about Shannon that leaves all the ladies confused. As Kelly and Michael try to navigate their tumultuous marriage, Meghan and Jimmy try to get a handle on her highs and lows of pregnancy. Meanwhile, Heather throws a fancy party filled with mixed emotions and cocktails to celebrate the release of her book; where Vicki and Shannon finally confront one another and Meghan proposes a trip to Ireland to investigate her heritage.

The ladies jet off to Ireland to explore Meghan's heritage and try their luck of the Irish. On a pub crawl, an over indulgence of spirits leads to a sobering exchange of words between Tamra and Kelly, ultimately pushing Tamra over the edge. With Kelly on the outs, the rest of the ladies try to salvage their first day in Ireland by enjoying a traditional Irish Hooley Night.

After a bumpy start to their vacation in Ireland, the women head off on separate adventures. Meghan takes Kelly to nearby Greystones Village in an attempt to locate distant relatives, while Vicki, Tamra, Heather and Shannon travel to a milk farm to get up close and personal with Ireland's finest cows. The two groups reconvene for dinner where Kelly awkwardly tries to make amends with Tamra. However, the peace treaty doesn't last long, as tensions reemerge and bombs fly when the ladies make their way back to the airport, leaving this group of friends in disarray like never before.

The Ireland trip ends with the conclusion of the bus ride from hell. Back in Orange County, the women try to make sense of their war on foreign soil, while Meghan escapes to St. Louis to get away from the drama. After months of strict diet and exercise, Tamra is finally ready to flaunt her body on stage at her long awaited fitness competition and the ladies gather to cheer her on.

In the season finale, the ladies gather together at Shannon's new house for a carb-loaded affair to celebrate Tamra's victory at the fitness competition. However, with the residual anger surrounding Vicki's loose-lipped gossip, Tamra, Heather and Shannon decide it's time to shut down the rumor mill. After an evening of avoidance, they finally confront Vicki about her vicious rumors.

The reunion kicks off as the women come together to grill Vicki on her journey from outsider, to insider, to outsider again. Tamra talks religion, being a peace maker and her award-winning a* while Meghan opens up about her baby blues and her relationship with Jimmy. When the '70' party accusations fly, new housewife Kelly stands her ground.

Kelly faces the music for her behavior this season and reveals some shocking secrets about her past. Heather goes head-to-head with Kelly about her outbursts at the sushi party, while Shannon talks about her vow renewal and rocky relationship with her mother-in-law. Vicki’s daughter Briana visits the couch to dish about her mom's relationship with the truth.

The reunion concludes with the ladies recounting their traumatic experience in Glamis. Old wounds are opened as Meghan finds herself on the defensive for her lack of sympathy towards Vicki after the accident. When the ugly drama of Ireland is discussed, emotions run high and Shannon is driven to her breaking point.

After a five-year hiatus, Heather Dubrow is back; Gina and Emily pay a visit to Dr. Jen Armstrong for some OC style self-care; things go awry when Shannon spills a secret about her old friend, Nicole, leaving Gina and Emily in an awkward position.

Gina and Emily investigate a juicy rumour about Shannon and Heather's old friend, Nicole; Gina feels compelled to reveal the truth, resulting in an explosive string of arguments that shuts down Heather's party.

Shannon apologizes to the ladies after Heather’s party, but finds that some are more receptive than others. Meanwhile, Noella’s husband blindsides her with unexpected news. Gina struggles to move forward with her friendship with Shannon and Dr. Jen works on her relationship with her mom. Emily reconnects to her faith as her daughter prepares to be baptized in the Mormon Church.

The ladies gather to celebrate Shane finally passing the California bar. Despite making amends with Gina, Shannon runs into another roadblock with Emily. Noella’s situation worsens as she struggles to find answers about her husband. Heather learns about Dr. Jen’s issues with Noella and soon finds herself in Noella’s crosshairs.

Shannon apologizes to Heather, but her atonement doesn't end there; Dr. Jen's attempt to smooth things over with Noella unexpectedly blows up; Gina warns Heather about more negative comments Noella has made.

Heather treats Jen and Emily to a spa day where Jen opens up about her marriage. Shannon heads for Nashville to visit her mom and is surprised when her daughter Sophie opens up about her new relationship.

Heather charters a private jet to Cabo San Lucas for the ladies. Noella ends up trailing behind after receiving a last minute invite from Gina. The crew enjoys some fun in the sun while Jen opens up to Heather about her struggles to find balance at home. Temperatures start to rise as soon as Noella arrives and Gina finds herself running interference.

As Cabo heats up and truths are revealed, the ladies struggle to keep their cool. Emily looks inward for answers, while Jen's pain pushes her to emotional limits. As Heather looks at properties, Gina questions whether her investment in Noella is worth the cost. And despite Shannon's efforts to keep the peace, she only stokes the fire more, causing an explosive chain of events.

During the ladies' final night in Cabo, tensions rise and Emily takes a fall. Back in the OC, Gina starts to question her friendship with Noella, meanwhile Shannon hopes to strengthen her friendships with Heather and Emily. Emily throws a game night, and Dr. Jen and Ryne come to a crossroads in their marriage.

When Shannon invites the ladies over to her home for a luncheon, Dr. Jen reveals her marriage is struggling and looks to the women for advice. Emily and Noella clash unexpectedly when Emily questions some details about her divorce. Heather spends quality time with her family, while Gina notices that not everyone is supporting her brand new venture.

Emily prepares for Annabelle's baptism, but struggles with her ongoing relationship issues with her father. Heather helps Gina purge her closet and finally lets go of her marriage. Noella gets some much-needed closure from her divorce proceedings, while Shannon stews over the fact that Gina said she is jealous of her. Heather throws a dinner party for Dr. Jen and Ryne in hopes of healing their relationship, but Dr. Jen overserves herself and nearly derails the entire evening.

While Heather and Gina take a trip to New York, Shannon has Emily, Noella and Jen over for a dinner party. Heather and Gina take a walk down memory lane and bond over their mutual support for each other, while Dr. Jen works on improving her marriage and herself.

The ladies' professional lives are booming. Heather celebrates the completion of a new project with Terry, Dr. Jen prepares to launch a new business venture and Emily meets with an exoneree as part of The Innocence Project. Dr. Jen finds herself at odds with Noella yet again, leading her to question if she should rescind an invite to an event she is hosting. Simmering frustrations finally boil over when Shannon and Gina confront each other over rumors of jealousy.

Tensions continue to rise between Gina and Shannon. Heather decides to address her lingering issues with Shannon, but is met with fierce opposition. Emily plans to celebrate her marriage with Shane, while Gina calls in reinforcements to conquer her Cabo demons. And just as the women come together to support the launch of Gina’s business, Noella gets earth-shattering news.

The ladies head to Aspen for some fresh air and much-needed relaxation. Upon arrival, Noella and Heather go head-to-head over the primary bedroom. Shannon begins to question her friendship with Emily. A relaxing dinner is turned upside down when all the women face-off over brewing tension.

Noella makes strides with her divorce but struggles to control her emotions. Emily and Shannon make peace and band together to give the other ladies a scare. Noella pushes Gina to her limits, causing a chain reaction that makes Heather question her friendships.

Noella confronts Heather about rumors she heard at Heather’s sushi party. Gina and Shannon try to salvage what’s left of their friendship. Emily and Shane finally have their dream wedding photo shoot to celebrate their marriage. The women all come together to help Shannon pursue her dream of becoming a rock star.

A discussion about Heather's return reopens old wounds for Shannon; the narrative of Noella's divorce is questioned; Emily confronts hard truths from her childhood; Gina and Shannon's growing resentments of each other come to a head.

Gina and Shannon's friendship hangs in the balance; Dr. Jen gives insight into her marriage; Shannon discusses her next chapter; Noella goes toe-to-toe with everybody as they discuss their trip to Aspen.

Tamra Judge is back, but her return to the group proves rocky when she accuses Shannon of ghosting her; Emily adjusts to being a full-time mum; Heather wants to know where her friendship stands with Gina; the ladies meet Jennifer Pedranti.

Gina and Emily bond with Jenn and learn about the reality of her complicated relationship; Heather prepares for her twins to leave for college; Shannon and Tamra meet to hash out their issues; Tamra throws her composure overboard.

Tamra regrets her behavior toward Shannon, and Jenn urges her to apologize and invite Shannon to the closing party; with her twins' college departure looming, Heather contemplates the next chapter of her life.

Tamra takes the women to a ranch in Montana; tensions arise when Heather learns that her career is being dissected; Gina makes a point to connect with Jenn; Emily helps her daughter Annabelle with her aspiring modeling career.

While the ladies take on ranch-hand tasks, Gina warns Heather about Tamra, whose comment about Heather's career puts Taylor in the hot seat; Gina and Jenn hash out feelings about infidelity; Shannon and Tamra give their friendship another shot.

The adventure continues in Montana when the ladies partake in fly-fishing and white-water rafting; Heather helps Gina deal with pent-up emotion, but later feels betrayed and contemplates their friendship moving forward.

Gina questions her friendship with Heather; Emily reconnects with her estranged mom; Heather throws a dinner party at Nobu, but the fancy ambiance quickly turns tense when Emily and Gina confront Heather about her behavior.

Emily throws a pool party, and Tamra brings a surprise guest; Gina works through personal issues with her ex; Heather and Emily make peace; Shannon discovers that Heather may be discussing her relationship issues with John Janssen.

Jenn and Tamra put their issues to rest and plan a triple date. Eddie confronts Ryan about all the rumors. As Heather nears the finish line with her L.A. penthouse, she ventures into new territory with a unique business venture and a surprising offer. Shannon strategizes how to handle discussions of her romantic relationship. Emily and Shane work through parenting issues. Gina brushes up on her real estate skills.

Jenn and Tamra co-host a party where the ladies dress as each other. Tamra pushes Eddie to figure out his next business venture. Heather informs Gina that Shannon is talking about Gina’s relationship. Vicki brings a keg to the party, kicking off a salacious game night. Shannon confronts Heather about revealing too much about her relationship, but fingers get pointed elsewhere, leading to an abrupt end to the party.

Shannon prepares for a fiesta party while dealing with the aftermath of her relationship issues going public; Tamra, Jenn and Taylor support Shannon at her party; Emily and Gina attend a fundraiser for the California Innocence Project.

Taylor hosts a pumpkin-carving party where Gina confronts Shannon for starting rumors about her past indiscretions; the ladies question Heather about recent paparazzi photos; Jenn raises concerns about marrying Ryan; Shannon confides in Tamra.

Heather throws a party to launch her HD Network, but tensions arise when Emily reveals an issue from the past; Jenn introduces Ryan to her mother; Tamra plans a trip to Mexico.

The trip continues as the ladies head to the Mexican jungle; Heather keeps herself in the hot seat after offending Emily; Shannon finally opens up to the group about her relationship with John; Vicki's surprise arrival turns sour.

The ladies enjoy their final days in Mexico and travel to Tulum; Jennifer questions all of her relationships and hopes that a shaman can bring her clarity; Heather feels alienated by the group and her frustration comes to a boiling point.

Gina hosts a circus party to get the group to move on from the disastrous end to their Mexico trip; Tamra and Heather's heated argument results in them ending their friendship.

Tamra tries to prove that Jennifer's relationship is not what it seems; Emily questions Heather's true feelings about the group; things get heated when Gina contemplates her future on the show after revisiting Shannon's comment about her family.

They may live in the lap of luxury, but life isn't always perfect for the women who reside in one of the wealthiest enclaves of the U.S.

Shannon is doing her best to move forward as she faces the consequences from her DUI; Emily deals with a new gym obsession; relationships are put to the test as both Giana and Jenn explore new living arrangements with their partners.

They may live in the lap of luxury, but life isn't always perfect for the women who reside in one of the wealthiest enclaves of the U.S.

With tensions lingering between Gina and Jenn, the ladies get their aggressions out in a flag football match; Shannon grapples with the fact that Alexis seems to be taking over everything that was once hers; Gina follows through on a tough decision.