Blake Lively - MET Costume Institute Gala 2009

Blake Lively shows off a bit of a leg in a stunning teal Versace gown at the “Model as Muse: Embodying Fashion” Costume Institute Gala at The Metropolitan Museum of Art in New York City on Monday (May 4).

The 21-year-old Gossip Girl actress is wearing Chanel Beauté makeup.

Not far along on the red carpet was boyfriend (and costar) Penn Badgley.

15+ pictures inside of Blake Lively @ the 2009 MET Costume Institute Gala…