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Justin Bieber has said he had a "really fun time" recording with Mariah Carey for his forthcoming Christmas album.
The 17-year-old singer has teamed up with Mariah on a cover of her classic festive hit, 'All I Want For Christmas Is You'.
Speaking to Capital's Rich Clarke, Justin said Mariah was "really cool" and "down to earth" to work with.
"The new version's really cool," he said of their cover of the song.
"It starts out with a Disney kind of opening and then she starts the song and I come in during the second verse."
Justin's Christmas album 'Under The Mistletoe' is due to be released on 31st October, and also features Usher and Boyz II Men.
Meanwhile, the singer also revealed during the interview that he was working on his next studio album, which will feature Kanye West and Drake.