Blake Lively arrives at the Metropolitan Museum of Art's Costume Institute Gala in New York on Monday May 4, 2009.
Kate Hudson arrives at the Metropolitan Museum of Art's Costume Institute Gala benefit celebrating "The Model as Muse: Embodying Fashion" on Monday, May 4, 2009 in New York.
Mary-Kate Olsen arrives at the Metropolitan Museum of Art's Costume Institute Gala in New York, on Monday, May 4, 2009.
Rihanna arrives at the Metropolitan Museum of Art's Costume Institute Gala in New York, on Monday, May 4, 2009.
Madonna arrives at the Metropolitan Museum of Art's Costume Institute Gala in New York, on Monday, May 4, 2009.
Victoria Beckham arrives at the Metropolitan Museum of Art's Costume Institute Gala in New York, on Monday, May 4, 2009.
Heidi Klum arrives at the Metropolitan Museum of Art's Costume Institute Gala in New York, on Monday, May 4, 2009.
Leighton Meester arrives at the Metropolitan Museum of Art's Costume Institute Gala in New York, on Monday, May 4, 2009.
Jessica Biel arrives at the Metropolitan Museum of Art's Costume Institute Gala in New York, on Monday, May 4, 2009.
Ashley Olsen arrives at the Metropolitan Museum of Art's Costume Institute Gala in New York, on Monday, May 4, 2009.
From left, actresses Rose Byrne, Selma Blair and Anne Hathaway arrive at the Metropolitan Museum of Art's Costume Institute Gala benefit celebrating "The Model as Muse: Embodying Fashion" on Monday, May 4, 2009 in New York.
Gisele Bundchen arrives at the Metropolitan Museum of Art's Costume Institute Gala in New York on Monday May 4, 2009.
Fashion designer Marc Jacobs and model Kate Moss arrive at the Metropolitan Museum of Art's Costume Institute Gala benefit celebrating "The Model as Muse: Embodying Fashion" on Monday, May 4, 2009 in New York.
Rosario Dawson arrives at the Metropolitan Museum of Art's Costume Institute Gala benefit celebrating "The Model as Muse: Embodying Fashion" on Monday, May 4, 2009 in New York.
Katy Perry arrives at the Metropolitan Museum of Art's Costume Institute Gala in New York, on Monday, May 4, 2009.
Kate Beckinsale arrives at the Metropolitan Museum of Art's Costume Institute Gala in New York, on Monday, May 4, 2009.
Jessica Alba arrives at the Metropolitan Museum of Art's Costume Institute Gala in New York, on Monday, May 4, 2009.
Rachel Bilson arrives at the Metropolitan Museum of Art's Costume Institute Gala in New York, on Monday, May 4, 2009.
Tyra Banks arrives at the Metropolitan Museum of Art's Costume Institute Gala in New York, on Monday, May 4, 2009.
Leslie Mann arrives at the Metropolitan Museum of Art's Costume Institute Gala in New York, on Monday, May 4, 2009.