Rihanna

    Singers Madonna, left, looks at Rihanna as they attend a Gucci UNICEF dinner at The Oak Room at the Plaza on Wednesday, Nov. 19, 2008 in New York. (AP Photo/Evan Agostini)

    AP

    From left, Gucci Creative Director Frida Giannini, Madonna and Rihanna attend a Gucci UNICEF dinner at The Oak Room at the Plaza on Wednesday, Nov. 19, 2008 in New York. (AP Photo/Evan Agostini)

    AP

    Singer Rihanna attends a Gucci UNICEF dinner at The Oak Room at the Plaza on Wednesday, Nov. 19, 2008 in New York. (AP Photo/Evan Agostini)

    AP

    Singer Rihanna attends a Gucci UNICEF dinner at The Oak Room at the Plaza on Wednesday, Nov. 19, 2008 in New York. (AP Photo/Evan Agostini)

    AP

    NEW YORK - NOVEMBER 19: Rihanna attends the launch of Gucci's Tattoo Heart Collection to benefit UNICEF at Gucci's 5th Avenue store on November 19, 2008 in New York City. (Photo by Rob Loud/Getty Images)

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    NEW YORK - NOVEMBER 19: Rihanna attends the launch of Gucci's Tattoo Heart Collection to benefit UNICEF at Gucci's 5th Avenue store on November 19, 2008 in New York City. (Photo by Rob Loud/Getty Images)

    Getty Images

    NEW YORK - NOVEMBER 19: Rihanna attends the launch of Gucci's Tattoo Heart Collection to benefit UNICEF at Gucci's 5th Avenue store on November 19, 2008 in New York City. (Photo by Rob Loud/Getty Images)

    Getty Images

    NEW YORK - NOVEMBER 19: Singer Rihanna attends UNICEF's 2008 Snowflake Lighting symbolizing the beginning of gift-giving season at Grand Army Plaza on November 19, 2008 in New York City. (Photo by Bryan Bedder/Getty Images)

    Getty Images

    NEW YORK - NOVEMBER 19: Singer Rihanna attends UNICEF's 2008 Snowflake Lighting at Grand Army Plaza on November 19, 2008 in New York City. (Photo by Bryan Bedder/Getty Images)

    Getty Images

    NEW YORK - NOVEMBER 19: Singer Rihanna participates in UNICEF's 2008 Snowflake Lighting at Grand Army Plaza on November 19, 2008 in New York City. (Photo by Bryan Bedder/Getty Images)

    Getty Images