Stars lit up the red carpet at the Metropolitan Museum of Art’s annual Costume Institute Gala last night, where some of the world’s most glamorous celebrated the opening of the museum’s latest style exhibit “American Woman: Fashioning a National Identity.” Stars like Jennifer Lopez, Blake Lively, Eva Longoria Parker and Kate Bosworth (and many, many more) proved there are no fashion rules at New York’s version of the Oscars! Click on to see all the red carpet photos from the Met Gala 2010.