Oscars 2017 live updates: First award of the night goes to Mahershala Ali for 'Moonlight'

Keira Knightley's red carpet looks

Keira Knightley, a recent Oscar nominee for "The Imitation Game," is also an expert at the red carpet game. Although the actress has a penchant for Valentino gowns, over the years she's worn Chanel, Roland Mouret, Dolce & Gabbana and more.
Dave Lewis
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