OC - Season 8, Episode 14 - The Cold War

Heather and Tamra go shopping for their trip to Whistler where Tamra lets Heather know that Gretchen knows about Vicki having a threesome.

Closed - Muse Boutique

Lydia takes the ladies to Whistler where Vicki finds out that Lauri is talking about her and a threesome she had
Still Open - Four Seasons