Video: Mariah Singing "Oh Santa" Live At Rockefeller Center

Mariah Carey kicked off NBC’s “Christmas at Rockefeller Center” on a high note.  Dressed like Mrs. Clause in a red coat, the Newly Pregnant Pop star grabbed hold of the sparkly mic and performed her Merry Christmas II You single “Oh Santa!” with some cheerleaders and school boys before the lighting of the big tree.

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