(Cover) - EN Showbiz - Mariah Carey was really energetic during a recording for the Disney Parks Christmas Day Parade.

The singing sensation is expecting her first child with television personality husband Nick Cannon, so when she performed at the famous Parade in Orlando recently many expected her to be taking it easier than usual.

But ever the professional, Mariah didnt let her pregnancy get in the way of her show as she proudly showed off her baby bump in a festive red outfit.

She reportedly even spent time swapping moves with dancers from the Orlando Ballet.

"She was really energetic," a backstage source told People. "She had definite ideas about what she wanted onstage, and she was working really hard."

Mariahs performance will air on Americas ABC network on Christmas morning, where she will be seen belting out classics such as Oh Santa and her iconic festive tune All I Want for Christmas is You.

Dancers from the Orlando Ballet were thrilled to get the chance to hang out with the talented singer. She appeared to be on top form, and took the time to give autographs and pose for photos.

"She wasn't really talkative or anything, but she was really pleasant," one of the dancers enthused. "She's a real pro." (C) Cover Media