WILLIAM MIDDLETON is a Paris-based cultural writer. He has been the fashion features director for Harper's Bazaar and the Paris bureau chief for Fairchild Publications, overseeing W and Women's Wear Daily. He is also the author of Double Vision, the first biography of Franco-American art patrons and collectors Dominique and John de Menil. ARTnews named the de Menil biography one of the best art books of the decade.