She could've been Mrs. Z Stardust, Mrs. Jean Genie, or even Mrs. Thin White Duke, but Iman is far too influential to require a last name. Before she became Bowie's blushing bride (they're going on 20 years now!), those two syllables were already synonymous with elegance, glamour, and the longest neck in the biz. Iman inspired a whole generation of designers—Gianni Versace, Donna Karan, and Yves Saint Laurent included—and she has still found time to write a couple of books, design a home collection, host a fashion reality show, and start her own cosmetics company. Boom. Happy b-day, Iman.