Jennifer Hudson sings as President Barack Obama and first lady Michelle Obama dance together at an Inaugural Ball at the Washington Convention Center, January 21, 2013.

President Barack Obama kisses first lady Michelle Obama during their dance at the Commander-in-Chief Inaugural Ball at the Washington Convention Center, January 21, 2013.

Vice President Joe Biden dances with Army Staff Sgt. Keesha Dentino as Jill Biden dances with Navy Petty Officer 3rd Class Patrick Figueroa during the Commander-In-Chief inaugural ball, January 21, 2013.

Singer Alicia Keys performs during the Commander-In-Chief Inaugural ball at the Washington Convention Center, January 21, 2013.

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, January 21, 2013.

Singer Stevie Wonder performs during the Inaugural Ball at the 57th Presidential Inauguration in Washington, January 21, 2013.