The singer - who had a huge hit with 'Murder On The Dancefloor' - is thought to have signed a £25,000 deal to don her dancing shoes.
A show insider told The Sun: “Sophie is a great signing.
“She’ll bring her showbiz connections with her as well as some glamour.
“She is already being touted as one to watch on the dancefloor.”
Other names linked to this year's series include 'Hairy Bikers' cook Dave Myers, 'Desperate Housewives' star Teri Hatcher, Olympic swimming heroine Rebecca Adlington, members of JLS and James Middleton's girlfriend, actress Donna Air.