Comedians Pete Firman and Ellie Taylor will channel their inner girl group for Let's Sing and Dance For Comic Relief.
Fronted by Mel Giedroyc and Sue Perkins, the series is back tonight on BBC One with the last of three heats culminating ahead of next Saturday's grand fial.
Once again celebrities will don more fantastic outfits and learn more iconic dance routines for Comic Relief, but this time the brave celebrities will be facing double the challenge – dancing and singing!
The performing celebs will be judged each week by a panel of top TV personalities and this week it's the fabulous Miranda Hart, Jennifer Saunders, Julian Clary and Tameka Empson
Among this evening's highlights, comedians Pete Firman and Ellie Taylor will take on a huge pop number from one of the UK’s biggest girl groups, Black Magic by Little Mix.
Pete said: "As a master of deception I've managed to hoodwink someone at the BBC into believing I can sing and dance. Whether I can fool a panel of judges and the great British public remains to be seen..."
Ellie added: "I'm totally terrified and utterly delighted to be taking part in Lets Sing and Dance for Comic Relief. I can't wait to turn the auto tune up to eleven.”
Also on tonight's line up are presenter Alison Hammond and actress Sally Lindsay.
As always, it'll be viewers who decide the top performers.
The one celeb with the most viewer votes will go through to the final while the judges will choose who else will make the final from the two runners up.
Let's Sing and Dance for Comic Relief airs tonight at 6:45PM on BBC One.