mariahsingingdisney.jpgMark Ashman/Disney

Mariah Carey performed at the Disney Parks Christmas Day Parade in Orlando over the weekend, and we love how festive and jolly she looks here!

Mariah belted out hits like "Oh Santa" and "All I Want for Christmas is You," and she even danced a bit onstage! "She was really energetic," a backstage source tells People. "She had definite ideas about what she wanted onstage, and she was working really hard." Hopefully she'll take it easy though -- that's what the holidays are all about, especially when you've got a baby on board!