Obamas at Inaugural Ball !

President Barack Obama and first lady Michelle Obama dance together at an Inaugural Ball, Monday, Jan. 21, 2013, at the Washington Convention Center in Washington, during the 57th Presidential Inauguration. (AP Photo/Carolyn Kaster)

Jennifer Hudson sings as President Barack Obama and first lady Michelle Obama dance together at an Inaugural Ball, Monday, Jan. 21, 2013, at the Washington Convention Center in Washington, during the 57th Presidential Inauguration. (AP Photo/Carolyn Kaster)

Vice President Joe Biden talks to Jamie Foxx as Jill Biden watches during The Inaugural Ball at the Washington convention center during the 57th Presidential Inauguration in Washington, Monday, Jan. 21, 2013. (AP Photo/Paul Sancya)

Jennifer Hudson performs while President Barack Obama dances with Air Force Staff Sgt. Bria Nelson as first lady Michelle Obama dances with Marine Corps Gunnery Sgt. Timother Easterling at the Commander in Chief's Inaugural Ball in Washington, at the Washington Convention Center during the 57th Presidential Inauguration Monday, Jan. 21, 2013. (AP Photo/Jacquelyn Martin)

President Barack Obama dances with first lady Michelle Obama during The Inaugural Ball at the Washignton convention center during the 57th Presidential Inauguration in Washington, Monday, Jan. 21, 2013. (AP Photo/Cliff Owen)

President Barack Obama and first lady Michelle Obama kiss as they dance during the Commander In Chief inaugural ball at the Washington Convention Center during the 57th Presidential Inauguration on Monday, Jan. 21, 2013 in Washington. (AP Photo/ Evan Vucci)

President Barack Obama and first lady Michelle Obama share a dance during the Commander In Chief Inaugural ball at the Washington Convention Center during the 57th Presidential Inauguration Monday, Jan. 21, 2013, in Washington. (AP Photo/ Evan Vucci)

The Mexican pop rock band Man performs during the Inaugural Ball at the 57th Presidential Inauguration in Washington, Monday, Jan. 21, 2013. (AP Photo/Paul Sancya)

Alica Keys performs during Inaugural Ball in the Washington Convention Center at the 57th Presidential Inauguration in Washington, Monday, Jan. 21, 2013. (AP Photo/Paul Sancya)

Brad Paisley performs at the Commander in Chief's Inaugural Ball at the 57th Presidential Inauguration in Washington, Monday, Jan. 21, 2013. (AP Photo/Jacquelyn Martin)