The president, first lady, Sasha, Malia and First Granny stepped out for another holiday soiree on Sunday night, the annual Christmas in Washington presentation at the National Building Museum. A very pregnant Mariah Carey performed, along with Andrea Bocelli and Annie Lennox.

President Barack Obama watches a performance with first lady Michelle Obama (wearing vintage Norman Norell) and their daughters Malia and Sasha during the Christmas in Washington Celebration at the National Building Museum in Washington December 12, 2010.

President Barack Obama and First Lady Michelle Obama posed for a group photo with children dressed as Christmas elves at a Christmas In Washington celebration December 12, 2010 at the Building Museum in Washington, DC. Obama's daughters Malia and Sasha are at and Michelle Obama's mother Marian Robinson is at.

TNT will air "Christmas in Washington" at 8pm EST on Sunday, December 20.
[photos via Reuters and Getty Images]