Queen of the stage show Denise Van Outen is joined by 2009 finalist Jo Brand and Shooting Star Vic Reeves on the panel of judges to rule over the likes of comedian Stephen K Amos, a group of Grumpy Old Women and a pair of ex-England footballers as they demonstrate their fancy footwork on the dancefloor.
Plus music from US pop sensation Justin Bieber and a performance of All That Jazz by the cast of West End smash hit musical Chicago.
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Ready to Watch Lets Dance For Sport Relief, Season 1, Episode 3?