Mariah Carey Is on 'When Christmas Comes' Video Set – Photo

Mariah Carey sure is a busy mommy these days. While working with Jenny to get her pre-pregnancy body back in shape, she's also recording a brand new album and doing duets with some of the biggest names out there.

After getting into the studio with Justin Bieber for a due on her classic “All I Want for Christmas,” Mariah went to work with good friend and idol John Legend.

Together, they did a remixed version of “When Christmas Comes,” which was initially included on her 2010 “Merry Christmas II You.”

Now, they're shooting a video, as the photo above will also confirm. It shows the two behind a piano, singing and smiling – and definitely getting into the Christmas spirit.

For the time being, there's no release date either for the collaboration or the video, but rest assured you'll find out about it here, when the time comes.