One Direction Sing ‘White Christmas’ With Michael Buble + Their Entire 1D Day Crew [VIDEO]
The Canadian crooner joined the band via satellite from a Las Vegas concert for a duet of 'White Christmas.' The self-proclaimed "Christmas prostitute" is infamous for his beautiful holiday tunes, and he was complemented as such by the British boys.
However, the ensemble grew even further when the entire crew of the show joined in for a sing-along -- and it happened only about thirty seconds into the performance! It didn't sound quite as lovely with all those other non-professional voices in the mix, but it was still pretty cute to watch. A very merry time was had by all!