Video: Mariah Carey Rocks Christmas!

Mariah Carey kicked off NBC’s “Christmas at Rockefeller Center” on a high note. Bundled up in a red coat, the Christmas queen 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.

The pregnant diva said she won’t be making her annual trip to Aspen for the holidays this month. “I can’t go there this year because of the altitude,” she told “Extra.” “We’re figuring it out. Looking at different options.” Watch the full interview below.