Who says charity isn’t fashionable? At this year’s Race to Erase MS gala, held at L.A.’s Century Plaza Hotel on Nov. 14, haute couture met celeb philanthropy as Tommy Hilfiger hosted what in recent years has become a social must for the star set. What brought the designer to the cause? ”Well, there’s multiple sclerosis in my family, and the grand opening of my new flagship store in Beverly Hills is tomorrow,” said Hilfiger. ”The timing’s perfect.” True altruism. Meanwhile, Sheryl Crow entertained the crowd (among her groupies: Dustin Hoffman, who joined his daughter Allie, 10, by the stage to watch the singer belt out ”All I Wanna Do”). But the night’s highlight was a star-studded fashion show, which included Scream 2‘s David Arquette (”Finally, I’m a runway-walking diva!”) and Melrose Place‘s Lisa Rinna and her husband, Harry Hamlin, who admitted: ”This is my virginal modeling experience.” The catwalk even beckoned No Doubt’s Gwen Stefani, who decided to vogue at the last minute. ”I just threw this on,” she said of her Hilfiger sweat suit. ”I’m totally a model now.” No doubt Naomi Campbell — who forgot to escort Hilfiger out at the end of the show — should watch out for her newest rival.