Last night was the star-studded, couture-clad Costume Institute Gala at the Met; the theme was "superheroes," to accompany the museum's latest Superheroes: Fashion and Fantasy exhibit. J. Lo commented on her own superhero ensemble, saying, "the only thing I could think of was Wonder Woman with my cuffs." Scarlett Johansson sort of showed off her rock, Beyonce paraded her independence -- coming without a wedding ring or Jay-Z, and Gisele Bündchen expressed her desire to......