Published Monday, 21 November 2011
Carey recruited Legend for a remake of her song When Christmas Comes, which originally featured on her 2010 album Merry Christmas II You.
The stars shot the promo in California earlier this month, and now Carey has revealed her six-month-old children, Moroccan and Monroe, feature in the festive film.
She tells Extra: "When Christmas Comes, people need to hear the song; I think John Legend swung it home! I think the fact that the babies are in the video is great.
"I wrote a line in the song that says 'We're gonna laugh together as the children play' - it was cute because I was pregnant when I sang it and the babies are here now."