New York Fashion Week’s “It” model Chanel Iman is making major waves in Milan too. The 18-year-old beauty was the first Black woman to walk Gucci’s runway in three and a half years. But the fashion house isn’t stopping with the catwalk. Rihanna will star in Gucci’s ad campaign with the United Nations Children’s Fund (UNICEF). The Bajan pop princess will promote Gucci’s limited-edition Tattoo Heart products and a quarter of the sales will be donated to UNICEF. The ads are expected to start appearing in magazines in December. Rihanna was also on hand to watch the Gucci show in Milan. She wore a sexy, black halter dress and thigh-high fringe boots.