Sonja's love triangle gets more complicated. Tinsley goes apartment hunting. Fredrik and Bethenny look over her apartment as they plan to put it on the market. Carole and Dorinda go to Washington DC. Ramona throws a party at her apartment.
Bethenny hosts her annual holiday party, but Ramona's not invited. Luann and Tom get married. Tinsley learns that "Frenchie" has moved into Sonja's townhouse. Luann and Tom host an NYC reception for the friends not invited to the wedding.
Bethenny and Ramona's fight reaches an explosive level. Carole shows Tinsley an available apartment. Luann and Tom host a final pre-wedding lunch with Dorinda and old friends, Jill and Bobby Zarin. Carole serves as model and host of an art opening.
Bethenny meets with Fredrik Eklund to discuss selling the Mercer apartment. Dorinda hosts the ladies at her Berkshire home. Before Luann arrives a few of the women make Dorinda aware of new rumors about Tom and they decide an intervention is needed.
The ladies join Dorinda in telling Luann what they've been hearing about Tom. Bethenny urges Luann to get out now if she has doubts. Ramona's weird behavior at dinner throws everyone off. The conflict between Bethenny and Ramona reaches new heights.