Marion Cotillard at 2010 Costume Institute Gala 2010-05-03 19:05:20

The Met's Costume Institute Gala: Marion Cotillard

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Marion went the screen siren route for tonight, and it suits her so well. Serious sparkle and a demure cut make for a glamorous cocktail. I'm guessing this is her favorite: Christian Dior. Either way, it's rockin'. Thoughts?

Vote on all of my Costume Institute Gala polls here!

Source: Getty
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