Only the promise of partying with Kate Moss could lure the weary fashion flock to an in-store event less than 24 hours after the Costume Institute's annual gala. Fresh off the Met's red carpet, guests like Naomi Campbell and Agyness Deyn were at it all over again at Barneys to toast the U.S. debut of Moss' 26-piece Topshop collection.

Having traded the thirties-style gown she wore to the ball for a sheer black-and-white print dress (both numbers were available on the selling floor), Moss took a few twists and turns as Hit the Road Jack hit the speakers. But she mostly huddled with fellow Brits like Sadie Frost and Sue Stemp, and this soirée was a far cry from last week's London debut, during which the supermodel posed in Topshop's storefront windows. "Never again," said Moss. "It was so hot in there, and then the curtain didn't work and I was, like, right, I'm just going to do it myself, but they wouldn't let me. But it wasn't so bad. I've done worse."

Meanwhile, Donatella Versace was busy introducing her new perfume, Versace, to fashion insiders at the label's Fifth Avenue store. "A woman is not completely dressed without a few drops of fragrance," said the designer, who supervised the creation of the day-to-night scent, which contains notes of black currant, lotus flower, angel wing jasmine, and purple wisteria. Versace's own favorite odeur? "It has to be jasmine from my childhood in the south of Italy," said Donatella, pointing to a countertop jasmine flower display. "It follows me everywhere I go."

— Sarah Cristobal (Kate Moss) and Jessica Ramakrishnan (Donatella Versace)