Alessandra Ambrosio

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, guest-starring as himself. Not wanting to miss out on the fun, Nick, Schmidt, Winston and Coach are determined to crash the festivities, building toward an unforgettable ending. The special episode also features cameo appearances by Victoria Secrets’ supermodels Alessandra Ambrosio and Ana Beatriz Barros and Los Angeles Dodger and Cy Young Award winner Clayton Kershaw.

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.

It's Vince's birthday, and with it comes the promise of a new year...and a new (hot) agent, Amanda, who wants Vince to do a high-profile period film. With the end of their relationship still stinging, Eric and Vince agree to have a friendly lunch with Ari. Turtle takes the reins planning Vince's birthday blowout, but rising costs, not to mention the strain on E's credit card, force him to seek alternative funds.

When Barney loses his "mojo," he attends the Victoria's Secret Fall Fashion Show after-party to get himself back on track, but his smooth operating skills are put to the test when he meets supermodel Heidi Klum.

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.