US President Barack Obama, First Lady Michelle Obama and their daughters, Sasha and Malia, sing alongside Justin Bieber (R), Victoria Justice (2nd R), Jennifer Hudson (3rd R) and Conan O’Brien (L) during a taping of “Christmas in Washington,” at the National Building Museum in Washington, DC, December 11, 2011. The show, hosted by O’Brien, airs on television December 16. AFP PHOTO / Saul LOEB (Photo credit should read SAUL LOEB/AFP/Getty Images)