Each Children In Need special will see four famous faces attempt to impress judges Patrick Grant and May Martin, and will be fronted by a different guest host.
DJ Edith Bowman, Hairy Bikers star Dave Myers, Coronation Street actress Wendi Peters, and Embarrassing Bodies' Dr Dawn Harper will compete in the first episode, presented by Jenny Éclair .
Sara Cox will oversee Pineapple Dance Studios' Louie Spence, stand-up Mark Watson, TV presenter Gaby Roslin and actress Pam Ferris in the second edition.
Finally, BBC Radio 1's Gemma Cairney, comedian Helen Lederer, author Kathryn Flett, and Overtones singer Timmy Matley will hit the sewing machines when Anita Rani takes charge.
Speaking about the shows, Bowman said: "It was a total joy to be part of Gbsb for BBC Children in Need, if not totally daunting.