Kristine Westerby was overheard thanking Vanity Fair fashion and style director Michael Roberts with some extra gusto at the Dior Homme show Sunday night. As it turns out, the vice president of marketing and communications for Dior USA's overzealousness was not without good reason. Vanity Fair's March Hollywood issue, photographed by Annie Leibovitz, features the entire cast of actresses--whose names are still under wraps--clad exclusively in John Galliano's designs for the French fashion house. Talk about a style, not to mention publishing, coup by any standard. The March issue hits newsstands February 6.