Vanderpump Rules [OV]

Lisa Vanderpump finds herself behind schedule on TomTom, James finds himself in hot water with the group after, and Jax makes a grand gesture to prove he's a new man.

Stassi plans an epic surprise party to celebrate Jax and Brittany's engagement, but Sandoval and Ariana question Jax's ability to commit to one woman for the rest of his life.

Schwartz takes James to task for insulting Katie, and Scheana feels threatened by Stassi and Ariana's newfound friendship. When Katie is the victim of body-shaming comments, she gives Lisa Vanderpump an ultimatum that will send reverberations throughout the SUR community.

Katie's ultimatum forces Lisa Vanderpump to reconsider employing James at SUR, while Scheana goes to drastic measures and cuts all ties with him. Lala makes her return to the hostess stand after a whirlwind few months.

Stassi and Ariana put their rivalry aside to throw an epic winter-themed birthday party. Jax confronts Tom Sandoval for questioning his engagement, while Scheana finds herself attracted to her "best friend".

Stassi struggles to make amends with Beau after her birthday meltdown, while a newly sober James attempts to rekindle his friendship with Lala. Later, Katie, Kristen, and Stassi's mom's pay a visit to LA.

Katie convinces Lisa to let her host a "Girls" Night In"party on James's" former night, but Billie Lee lashes out at Katie for not including her in the planning. Later, Brittany throws an unexpected tantrum.

Ariana erupts on Tom for gossiping to the guys about her past romantic encounters with women, and Lisa Vanderpump finally reveals the fully finished TomTom to a giddy Sandoval and Schwartz.

Lisa Vanderpump entrusts Sandoval and Schwartz with major responsibility as they scramble to get TomTom ready for its opening event, but Kristen is devastated when she learns she's not allowed to come.

Lala treats her girlfriends to the good life when she takes them to Solvang on a private jet. Jax and Brittany go to therapy to discuss his infidelities while James fights with his mother over money.

Kristen's bizarre behaviour threatens to spoil the girls' trip in wine country. Back in LA, James is overjoyed when he gets invited to the guys' wild "staycation" and Jax fears he may stray when Tom Sandoval invites girls back to their hotel room.

Stassi gives Kristen tough love about her relationship with Carter while Lala faces a betrayal by her boyfriend that may end their relationship. James makes a play to get his job back at SUR after Lisa lets him DJ an event at PUMP

Kristen and Carter cause a huge fight with Stassi and Katie in front of Beau's mom. Meanwhile, Tom Sandoval and Ariana talk about having kids and Jax dotes on Brittany after she has surgery.

Katie explodes when she learns James is invited on the trip. Kristen and Carter share an awkward dinner on their three-year anniversary and Lisa Vanderpump doles out some wisdom that might salvage a friendship and business partnership.

A grieving Lala breaks down and lashes out in front of customers, while James deals with being disinvited from the group trip to Mexico. Scheana looks to reconnect with Stassi, Katie and Kristen and Lisa helps plan TomTom's grand opening.

Lisa, Sandoval and Schwartz throw all their effort into preparing TomTom for the grand opening, while Jax complains about the mounting expense of his upcoming engagement party.

As the Mexico trip continues, Stassi unleashes her insecurities on Beau, while Ariana attempts to show Lala the error of her mean girl ways. A blissful Kristen finally conquers her travel anxiety, but her temper is tested when Jax dredges up old accusations against her.

Lala's decision to return to drinking leads to a public panic attack, while Schwartz finds a unique way to rekindle the romance with Katie. Stassi and Beau try to repair their relationship after their epic fight, while Kristen and Ariana take a step forward in their newfound friendship.

Tom Schwartz is determined to honour his financial obligation to Lisa, while Stassi visits a real-life witch to exorcise the demons threatening her relationship with Beau. Lala pays tribute to her father through music and James is livid after losing another DJ gig. Also, Jax reveals some troubling issues during his and Brittany's therapy session.

Scheana is on a mission to make Adam jealous, while James accuses Lala of being insincere in her attempt to save their friendship. Ariana vows to confront Lisa Vanderpump after being told she has been criticizing Tom Sandoval's work ethic. With her family in town, Brittany preps for her engagement party unaware of the tense conversation Jax is having with her father.

Brittany's fairy-tale themed party takes a turn when her father expresses doubts about his future son-in-law. Ariana confronts Lisa Vanderpump about not respecting Tom and Tom as business partners. Finally, the simmering tensions between Scheana and Adam boil over after Scheana reveals she's been with another guy.

James's girlfriend Raquel Leviss answers questions about her boyfriend's alleged infidelity, while Jax and James go head to head over vicious Twitter allegations, and Scheana confronts Lala about hiding her true life and relationship.

Lala and James argue over the demise of their friendship, Katie defends her ultimatum to Lisa, and Ariana and Lala reveal the steamy details of their unexpected hook-up. Billie Lee joins the cast to discuss the "Girls Night In" fiasco, her feud with Lala and reveals a secret hook-up of her own.

Kristen's tumultuous relationship with Carter comes under fire while Jax answers for his bad behaviour toward Brittany's family. Stassi's boyfriend Beau Clark opens up about their dramatic fights in Mexico and the future of their relationship. Lisa warns James that his outbursts and aggression may cause him to lose what little support he has left.