Kelly Brook will play Celia - Miss September
Kelly Brook and Julie Goodyear, who played Bet Lynch in Coronation Street, are to bare all in the West End play Calendar Girls.
Former newsreader Jan Leeming and Rob James Collier, who played Liam on Coronation Street, will also join the cast change.
The show is inspired by Women's Institute members who took their clothes off for a charity calendar.
EastEnders' June Brown and Jerry Hall are currently starring in the hit show.
Helen Lederer and Arabella Weir will also join the new line-up which take over on 3 November. They will be on stage at London's Noel Coward Theatre for 10 weeks.
West End debut
Goodyear left Coronation Street in 1995 before returning for guest appearances. She will be making her West End debut playing Cora.
Julie Goodyear will take the role of Cora - Miss July
Brook will take the role of Celia. It will not be the first time she has undressed on stage, she played a lap dancer in a play called Eye Contact.
Last year she stripped down to a bikini when she made her West End debut in hit play Fat Pig.
The idea for the calendar came about when the husband of Angela Baker from the Rylstone Women's Institute in North Yorkshire was diagnosed with non-Hodgkins lymphoma.
The original calendar sold 800,000 copies worldwide. The story inspired the 2003 film on which Tim Firth's stage play is based.