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Bieber, Cee Lo, Hudson celebrate "Christmas in Washington"

Justin Bieber sings during a taping of "Christmas in Washington," at the National Building Museum in Washington, DC, Dec. 11, 2011. Getty Images

(CBS/AP) The Obamas celebrated the holiday season with musical stars Justin Bieber, Cee Lo Green, Jennifer Hudson, Victoria Justice and The Band Perry at the 30th annual "Christmas in Washington" concert Sunday night.

After the show, Bieber tweeted, "Great night! President Obama is one cool Prez. He told me he was "chillin."

Pictures: Christmas in Washington 2011

The evening's host, comedian Conan O'Brien, said that during the holidays, people start to think about a miracle child worshiped by millions worldwide.

"I'm speaking of course, of Justin Bieber," O'Brien joked, reports Reuters.

President Barack Obama, his wife Michelle, daughters Malia and Sasha, and mother-in-law Marian Robinson attended the concert to benefit the Children's National Medical Center.

In honor of the "season to celebrate miracles," Obama spoke about the story of Jesus' birth during his brief remarks to the crowd.

"Those are values that are shared by all faiths," Obama said. "So tonight let us all rededicate ourselves to each other, and in that spirit, from my family to yours: Happy holidays, Merry Christmas, God bless you all, and God bless the United States of America."

The 30th annual "Christmas in Washington" will air Friday on TNT.

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