Gwen Stefani (who played '30s screen queen Jean Harlow in The Aviator) relives the decade with her bias-cut Atelier Versace gown and shiny tresses (left). "The platinum blonde really is the iconic '30s movie-star look," says Kaufman. And her Dior Greek goddess-like draped dress (right) is also a nod to the past. "John Galliano for Dior is completely inspired by the gowns of that era."