Paul Hollywood, Prue Leith, Matt Lucas and Noel Fielding invite the stars from the award-winning hit drama It's A Sin to join them in the famous white tent to celebrate Christmas.
Olly Alexander, Nathaniel Curtis, Lydia West and Shaun Dooley compete for the coveted Christmas Star Baker title, before we wrap up Christmas with the London Community Gospel Choir as they perform their version of All I Want for Christmas.
Airs Christmas Day at 8pm on Channel 4.