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

  • RIHANNA  photo | Rihanna

Credit: Evan Agostini/AP

Updated: Thursday Feb 07, 2008 | 11:15 AM EST

RIHANNA

The singer may look perfectly stunning in her long green Gucci gown, but she admits to a case of nerves about her performance. "I'm definitely nervous," she tells PEOPLE. "I'm singing 'Umbrella' and 'Don’t Stop the Music'."