1 of 28 Mark Wilson/Getty Images
President Barack Obama and first lady Michelle Obama arrive at the Youth Inaugural Ball.
2 of 28 John Moore/Getty Images
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Vice President Joe Biden waves to the crowd after a spin on the dance floor with his wife, Jill, at the Commander-In-Chief's Inaugural Ball.
3 of 28 Kevin Mazur/WireImage.com
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Kanye West pumps up the crowd during a performance on MTV and ServiceNation's Be the Change: Live from the Inaugural, which was broadcast from the Youth Inaugural Ball.
4 of 28 Kevin Mazur/WireImage.com
Ashton Kutcher and Demi Moore pause for a quick photo at the Youth Inaugural Ball.
5 of 28 Win McNamee
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President Obama and first lady Michelle Obama dance as Beyonce sings Etta James' "At Last" during the Neighborhood Inaugural Ball.
6 of 28 Kevin Mazur/WireImage.com
Tobey Maguire and his wife, Jennifer Meyer, give the photogs a glance at the Youth Inaugural Ball.
7 of 28 Kevin Mazur/WireImage.com
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Kid Rock performs during MTV and ServiceNation's Be the Change: Live from the Inaugural, which was broadcast from the Youth Inaugural Ball.
8 of 28 Kevin Mazur/WireImage.com
Kanye West, Rosario Dawson and Usher posed together at the Youth Inaugural Ball.
9 of 28 Michael Tran/FilmMagic.com
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Heather Graham and Matthew Modine mug for the cameras as they arrive at the Creative Coalition's 2009 Inaugural Ball.
10 of 28 Michael Tran/FilmMagic.com
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Friday Night Lights' Connie Britton walks the carpet at the Creative Coalition's 2009 Inaugural Ball.
11 of 28 Michael Tran/FilmMagic.com
Marisa Tomei pauses for the cameras on the carpet at the Creative Coalition's 2009 Inaugural Ball.
12 of 28 Michael Tran/FilmMagic.com
ER's Gloria Reuben walks the carpet at the Creative Coalition's 2009 Inaugural Ball.
13 of 28 Michael Tran/FilmMagic.com
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Lipstick Jungle's Kim Raver gives peace a chance as she walks the carpet at the Creative Coalition's 2009 Inaugural Ball.
14 of 28 Michael Tran/FilmMagic.com
Ron Howard and wife, Cheryl, make a splash at the Creative Coalition's 2009 Inaugural Ball.
15 of 28 Jeff Vespa/WireImage.com
Anne Hathaway is on fire in a bold red gown at the Creative Coalition's 2009 Inaugural Ball.
16 of 28 Michael Tran/FilmMagic.com
Kerry Washington shows a little leg at the Creative Coalition's 2009 Inaugural Ball.
17 of 28 Michael Tran/FilmMagic.com
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Wendie Malick (Just Shoot Me) stops for photos on the carpet at the Creative Coalition's 2009 Inaugural Ball.
18 of 28 Michael Tran/FilmMagic.com
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Tony Goldwyn and Private Practice's Tim Daly look sharp as they arrive at the Creative Coalition's 2009 Inaugural Ball.
19 of 28 Michael Tran/FilmMagic.com
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Desperate Housewives' Dana Delany gets caught by the flashbulbs at the Creative Coalition's 2009 Inaugural Ball.
20 of 28 Jeff Vespa/WireImage.com
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New American citizen Alan Cumming flashes a peace sign and a devilish look at the Creative Coalition's Inaugural Ball.
21 of 28 Jeff Vespa/WireImage.com
Sting and Elvis Costello duet during a performance at the Creative Coalition's 2009 Inaugural Ball.
22 of 28 Jeff Zelevansky/Getty Images
Jennifer Lopez and her husband, Marc Anthony, perform together at the Western Inaugural Ball.
23 of 28 Frank Micelotta/Getty Images
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Hip-hop star Common gets the crowd going with a performance at "Yes We Will! BET's Inauguration Celebration."
24 of 28 Frank Micelotta/Getty Images
Akon performs at "Yes We Will! BET's Inauguration Celebration."
25 of 28 Frank Micelotta/Getty Images
Nas works the stage and the crowd at "Yes We Will! BET's Inauguration Celebration."
26 of 28 Theo Wargo/WireImage.com
Amy Brenneman pauses for a photo at the Inaugural Purple Ball.
27 of 28 Joe Kohen/Getty Images
Amy Madigan and her husband, Ed Harris, attend the Inaugural Purple Ball.
28 of 28 Joe Kohen/Getty Images
Actress Ashley Judd works the carpet at the Inaugural Purple Ball.