For Gucci's fourth annual campaign to benefit UNICEF, they've issued a limited edition white version of its Tattoo Heart Collection, reports Vogue. And Rihanna their sexy spokesmodel! When you purchase an item from the white Tattoo Heart Collection, Gucci will donate 25% of the sale to support UNICEF programs for orphans and children affected by HIV/AIDS in Africa. This collaboration will take place in 20 countries from November 19, 2008 through January 31, 2009.

A budding philanthropist, in 2006, Rihanna founded The Believe Foundation to benefit needy children around the world.

Tonight, Gucci creative director Frida Giannini and Rihanna will celebrate the launch of the Gucci UNICEF campaign by lighting the historic UNICEF Snowflake at Grand Army Plaza in Brooklyn, New York. After the lighting ceremony, Giannini and Rihanna will host a private cocktail party in Gucci's 5th Avenue flagship store to celebrate the launch of the white Heart Tattoo Collection.