Best Dressed of the Week: Marion Cotillard in Dior Couture, Anne Hathaway in Prabal

Hats off to Marion Cottilard this week, who stunned on the red carpet in a checkered Dior couture cocktail dress.

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Marion Cotillard continues to knock it out of the park on the red carpet for "Dark Knight Rises." In London, the star outdid herself in a chic strapless Dior checkered dress, which she accented with bright red pumps and matching ruby lips.
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Likewise, Anne Hathaway looked like a cross between a Greek goddess and Mia Farrow (with that new pixie cut) in a shimmering Gucci column gown with a flowery neckline.
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Earlier in the week at the New York premiere, Hathaway tried a glamorous all-white Prabal Gurung gown, which featured a girlish peplum waist and bejeweled silver neckline.
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Carly Rae Jepsen looked bright and cheeryful in a red lace dress and pink-capped oxfords at the Crazy Good Summer concert in Chicago.
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Rocking a fierce asymmetrical hairdo, Ashlee Simpson hosted a promo event for Samsung clad in Alice & Olivia's red leather shorts and an untucked silk blouse.
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For the launch of Johnnie Walker Gold Label, Mischa Barton opted for a dramatic shoulderless black gown by Temperley London, which she paired with glinting gold cuffs and a tousled up 'do.
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Earlier in the week, Barton attended a private dinner for Johnnie Walker Blue in a a fuzzy black sheath dress and black suede booties.
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Kate Middleton looked timeless yet modern in a bright blue Stella McCartney sheath dress and low black pumps.
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Promoting her collection in Ireland, Victoria Beckham modeled one of her own sleek, sophisticated overcoats and black patent pumps at an event in Dublin.
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Heidi Klum hit an anniversary party for "Project Runway" clad in a minimalist V-neck black sheath dress and nude peep-toe pumps.
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At a dinner for Flaunt magazine, Freido Pinto styled a smart red satin skirt and bow-tie top by Contrarian with black patent Louboutins and a chic chignon.
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Also at the Flaunt party, "New Girl" star Hannah Simone sported a flirty purple cocktail dress with hot pink accents.
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Carmen Electra hit the Flaunt party clad in a demure violet-flecked tweed sheath dress with bright purple cap sleeves.
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Ashley Tisdale hit the premiere of "Step Up Revolution" in a sassy strapless bustier dress by Aussie label Camilla & Marc paired with black-and-white-striped sandals and a matching pillbox clutch.
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Lily Collins keeps it real in a red flower-print sundress from Madewell and a white crystal necklace.
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