WASHINGTON, DC – DECEMBER 11: (AFP OUT) U.S. President Barack Obama (Center L), first lady Michelle Obama (L) and daughters Sasha (2nd L) and Malia (3rd L) are joined by entertainers Jennifer Hudson (Center R), Victoria Justice (2nd R) and Justin Bieber (R) for a final song at the conclusion of the performances at the annual “Christmas in Washington” gala on December 11, 2011 in Washington, DC. It’s the 30th anniversary of the “Christmas in Washington” gala. (Photo by Mike Theiler-Pool/Getty Images)