Last Night's Look: Hit or Miss?

Vote on this week's styles including Ashlee Simpson, Mariah Carey and more stars! You decide – are they fashionistas or flops?

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NATALIE PORTMAN

Bringing Hollywood glamour to Washington, the politically active actress heads to the White House Correspondents' Association Dinner in D.C. in a stunning black gown with panel collar detail, organza shawl and satin clutch.
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