Haute & Fabulous: Stars Party with Gucci

Hollywood's heavy-hitters (J.Lo & Marc! Tom & Katie!) come out as Madonna hosts the charity event. By Melissa Liebling-Goldberg

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MADONNA

The host of the evening (in Gucci, of course) helped raise $3.7 million for the event benefiting children made vulnerable by HIV/AIDS in Africa. Her longtime business associate Guy Oseary tells PEOPLE, "A lot of [Madonna's] heartfelt time and energy and passion went into this event."