Biography: Joan Juliet Buck (born 1948) is an American writer and actress. She was the editor-in-chief of French Vogue from 1994 to 2001, the only American ever to have edited a French magazine.[1] She was contributing editor to Vogue and Vanity Fair for many years and now writes for T, New York Times's fashion magazine, W magazine, Newsweek/Daily Beast, among others.