The diva shows off her two-piece during a yachting expedition. Plus: Mandy & DJ AM, Gwen & Gavin and more

WHITE WONDER

Uma Thurman cuts a dazzling figure arriving at a show of Valentino's best creations at the Ara Pacis museum in Rome on Friday. The event is part of the designer's 45th-anniversary celebrations, which will finish with a grand-gala ball.