Last Night's Look: Love It or Leave It?Check out the head-turning outfits Kristen Stewart, Halle Berry and more stars were just spotted in! Then decide – fabulous or fashion fail!

MARION COTILLARD

The French beauty is très chic at the Harper's Bazaar party in London, wearing her black tulle strapless Dior dress with pointed heels and a sparkling Chopard necklace.



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