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Which of the First Lady's formal evening gowns is your favorite?
Yellow Prabal Gurung for the Governors Ball
White and Gold L'Wren Scott for State Dinner in El Salvador
Purple Jason Wu for White House Association Anniversary Celebration
Red Naeem Khan for Kennedy Center Honors
Red Alexander McQueen for State Dinner with Chinese Prime Minister Hu Jintao
Black Ralph Lauren for Dinner with the Queen of England
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