By ETonline Staff
5:16 PM PDT, May 1, 2011
PICS: Hollywood Invades Capitol Hill
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Cee Lo
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John Legend
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Gayle King
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Ariel Winter & Mila Kunis
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David Arquette
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Bristol Palin
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Zach Galifianakis & Bradley Cooper
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President Barack Obama
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PICS: Hollywood Invades Capitol Hill
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On Saturday, all the stars were out in Washington D.C. for the White House Correspondents' Dinner, from the President and First Lady to the stars of 'The Hangover'!