Guess Who's Coming to Dinner?
Farther downtown, Calvin Klein designer Francisco Costa held court like a king without his queen—that is until Oscar nominee Hilary Swank cruised into Indochine around 10:30 and promptly took a seat in the back. Other attendees ranged from Claire Danes to J.T. LeRoy to new mom Muffie Potter Aston. An enthused Sally Albemarle said of Costa's well-received collection, "I could picture myself wearing every single piece… and that rarely happens."

Pretty in Pink
Dutch designers Viktor Horsting and Rolf Snoeren lit up the exterior of Saks Fifth Avenue in a pale pink glow and lined the store's entrance with 100 cancan dancers for the U.S. launch of their new fragrance, Flowerbomb. The duo celebrated the second leg of their international tour—a party in Paris took place during the recent couture shows—with Fabien Baron, Fashion Week staple Oksana Baiul, Famke Janssen, and Carol Alt.

Posen Power!
Over at the Four Seasons, Zac Posen was fêted by Interview magazine, M.A.C cosmetics, and a host of his fab friends, from regular Zac-ites Paz de la Huerta and Lola Schnabel to Shannen Doherty and Vivica Fox. Royal Bad Boy Sean Combs showed up with entourage in tow, much to the delight of fellow partygoer Ashanti, who scrambled for a picture. Posen himself bounced around the room greeting all his guests, clearly pleased with the turnout. "Sean thought the collection was very sexy," he said of his friend and backer, before turning his attention to the indoor pond. "I think we need someone in the pool!"

J. Lo a No-show
The front row at Jennifer Lopez's Sweetface show read like a typical MTV roll call, with (count 'em) three sparring divas—Ashanti, Foxy Brown, and Lil' Kim—checking their egos at the door to honor the glamazon of the moment. But with a hectic Grammy schedule on her calendar, La Lopez opted to skip her own after-party at Ruby Falls for the comforts of the W Hotel's backstage VIP lounge, where she and hubby Marc Anthony toasted her sweet success with just her sisters and a little Alizé for company.

—Sarah Cristobal