Justin Bieber and Nicole Scherzinger are amongst the guest stars lined up for Let's Dance for Comic Relief 2013.
The pair are due to perform on the show over the coming weeks, with Kimberley Walsh singing on Saturday night's opening show.
Others booked include Paloma Faith and The Script.
The show returns at the weekend with another batch of celebs recreating famous dance routines and music videos, with a bunch of comics offering their funny but not at all expert opinion.
EastEnders actress Natalie Cassidy, joking one line king Tim Vine, boxer Ricky Hatton and presenter Olivia Lee are amongst those who will be taking part in the first show on Saturday night
But it's Lee Nelson who is being backed to win already.
Jessica Bridge of Ladbrokes said: "We're certain that Lee Nelson's dance will be doing something funny for money and that's why he's the early favourite."
Browse pictures of Alex Jones and Steve Jones posing for Let's Dance below...