Duet of the Day: Idina Menzel & Michael Bublé Sing 'Baby It's Cold Outside'

While her "Frozen" co-star Kristen Bell is taking a more modern approach to Christmas songs, Idina Menzel is sticking with the classics - albeit one of the more controversial classics.

Watch them sing through the mouths of young children - for some reason - in a version of the song that also cuts out the alcohol references and some of the predatory innuendo from the original.