Katy Perry at the Costume Institute Gala in New York. May 3, 2010.
Oh, Katy Perry. How we adored seeing you light up (literally) the room in your Cute Circuit dress! She definitely takes home the prize for boldest thigh-slit fashionista.
/ Stephen Lovekin/Getty Images

MTV Style | The Best Thigh-High Slit Dresses Of 2010 (10)