Ashley Olsen - 2009 MET Costume Gala

Ashley Olsen wears her own design in The Row as she walks the red carpet at the “Model as Muse: Embodying Fashion” Costume Institute Gala at The Metropolitan Museum of Art in New York City on Monday (May 4).

Justin Timberlake, Kate Moss, Marc Jacobs and Anna Wintour will host the annual gala to raise money for the organization.

Other celebs spotted at the event include: Kate Hudson, Jessica Alba, Heidi Klum and Victoria Beckham.