21. Joan Smalls
Known For: Host of MTV's House of Style reboot, Face of Gucci, Roberto Cavalli, Stella McCartney and Estee Lauder
Joan Smalls is the new generation's Tyra Banks. The host of MTV's rebooted House of Style has appeared in countless campaigns, including Chanel and Barney's New York, and in numerous editorials for mags such as Vogue and Harper's Bazaar. According to Models.com, she's currently ranked the no. 1 model in the world as of September 2012.