Demi, Tobey, Marc & J.Lo and more kick off the night's festivities at 10 Inaugural Balls!
Credit: CHUCK KENNEDY/Landov
Updated: Wednesday Jan 21, 2009 | 12:00 PM EST
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Mariah Carey belts out her hit "Hero" Tuesday in honor of President Barack Obama and first lady Michelle at the Neighborhood Inaugural Ball in Washington, D.C.
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