Alessandra Ambrosio

The gang all join a gym and Barney sees Rhonda, the woman he lost his virginity to, while working out. He discovers that she didn't rate his performance in bed, despite telling him she did at the time.

Jess is ready to paint the town purple when a chance encounter finds her and Cece invited to a once-in-a-lifetime mansion party thrown by music legend Prince.

As the Otto family ushers in a new era, Katie and Greg make the emotional decision to sell the family minivan. Daniel suffers a setback that forces him to rethink how to accomplish his goals.

Vince's new agent wants him to do a period film, Eric and Vince agree to have lunch with Ari, and Turtle plans Vince's birthday party.

It's back to the Upper East Side! On her first day at Columbia, Blair attempts to gain membership into an ultra-exclusive social club, Hamilton House, but she's in for a few big surprises. Serena begins to suspect that her life is being intentionally sabotaged by Juliet (recurring guest star Katie Cassidy), and that it may have something to do with Nate. Meanwhile, Rufus is worried about Dan and decides to take matters into his own hands.