Kevin Lamarque/Landov

BEST OF 2009: MOST STYLISH COUPLESThe always-dazzling First Couple celebrated their first formal event in style, with the President's classic tuxedo complementing Mrs. Obama's Peter Soronen bustier gown and Tom Binns necklace

WHERE The Governors' Dinner at the White House on February 22nd

TREND: Black

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Michelle and Barack Obama

Michelle and Barack Obama