Bee Shaffer, daughter of " Vogue" magazine editor Anna Wintour, arrives for the Metropolitan Museum of Art Costume Institute Gala, "Superheroes: Fashion and Fantasy" in New York, May 5, 2008. The superhero mania that is invading American cinemas this summer has taken hold at one of the country's most distinguished art museums with an exhibit on how their colorful costumes have influenced fashion. (Agencies)