AmfAR hosted its latest star-studded gala last night at NYC's Cipriani Wall Street to honor the philanthropic work of former President Bill Clinton, who had his daughter Chelsea and her husband of six months Marc Mezvinsky on hand to celebrate. Chelsea took the stage to introduce her father and compliment his good work to fight AIDS worldwide. She said, "The work he has done, the work he is doing and the work he will continue to do [for AIDS research] is invaluable. . . That's a good reason to be proud. An even better reason to be proud is he hasn't stopped." The Good Wife's Julianna Margulies enjoyed the evening out with her great looking husband Keith Lieberthal, while Dexter's Michael C. Hall made the rounds with a guy pal. A handful of fashionable folks also used the event as an informal kick-off for Fashion Week, with Vogue's Anna Wintour mingling with an Alexander McQueen-clad Blake Lively.