WASHINGTON, Nov. 29 (UPI) -- PSY, Diana Ross, Megan Hilty, Demi Lovato, Chris Mann and Scotty McCreery are to perform during the upcoming "Christmas in Washington" event, TNT said.
Comedian and late-night chat-show host Conan O'Brien is to serve as host of the holiday special for a second consecutive year. The program will be taped Dec. 9 and will air Dec. 21.
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