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Marion Cotillard

Two days earlier, Cotillard caused a commotion in yet another Dior gem. For the soon-to-be blockbuster's NYC debut, she donned this ballerina-like cocktail frock and silver Christian Louboutin sandals. Flawless. (7/16/2012)

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2 Hot 2 Handle

This week's best-dressed stars include Kyra Sedgwick, Heidi Klum, and Anne Hathaway.  --  By Matt Whitfield, Yahoo! Staff