Five of the world's greatest professional tribute acts go head to head in this Christmas special hosted by Paddy McGuinness. The acts pay tribute to music legends Michael Buble, Michael Jackson, John Lennon, Kylie Minogue and Bruce Springsteen. Each performer sings an iconic Christmas hit made famous by their musical idol, before the studio audience choose their favourite three to perform again. They then pull out all the stops with a very special collaboration as they are joined on stage by another tribute artist paying homage to an iconic music legend. After the duets round, the studio audience vote again for their favourite act of the night, and that performer is crowned the winner.