Mariah Carey rang in the holiday season on Sunday night (12Dec10) with a star-studded charity Christmas concert for America's First Family.
The singer, who is expecting her first child with husband Nick Cannon, showed off her bulging baby bump in a long red dress at the annual Christmas in Washington concert at the National Building Museum in Washington, D.C.
Carey and Glee star Matthew Morrison were among the entertainers who sang Christmas carols and performed for U.S. President Barack Obama, First Lady Michelle Obama, their daughters Malia and Sasha and First Grandmother Marian Robinson.
The festivities, hosted by comedienne Ellen DeGeneres, benefited the Children's National Medical Center.
The concert will be broadcast in America on Friday (17Dec10).