President Barack Obama and first lady Michelle Obama, wearing a ruby colored chiffon and velvet Jason Wu gown, sings along to Al Green's "Let's Stay Together" as they dance at the Washington Convention Center during the 57th Presidential Inauguration in Washington, Monday, Jan. 21, 2013. (AP Photo/Charles Dharapak)
Gallery: Presidential Inaugural balls
Jan. 22, 2013 @ 01:37 PM
It's a rare event where Beyonce, Katy Perry and Jennifer Hudson aren't the headliners. But at Monday night's inaugural balls entertainment celebrities just had to mix with the powerful from politics and business.