The American Ice Ice Baby singer, 43, will be competing in the show when it starts on ITV1 on January 9 along with reality star Kerry Katona, footballer Frank Lampard's ex Elen Rives and Hollyoaks star Jennifer Metcalfe.
Other stars also taking part include TV journalist Angela Rippon, TV presenter and actress Denise Welch and presenters Chloe Madeley and Nadia Sawalha.
Former Coronation Street actor Steven Arnold and TV presenter Jeff Brazier, the father of late reality star Jade Goody's two sons, are also in the line-up.