Charlotte Church is reportedly being lined up to take the place of Denise Van Outen on Andrew Lloyd Webber's new West End TV contest.
Reports say pregnant Denise, along with the other judges, will no longer continue her role.
Over The Rainbow - a search for the new Dorothy in Wizard of Oz - begins in March, just two months before the bubbly blonde is due to give birth in May.
"Over The Rainbow is a brand new show for BBC One with a completely new line-up of judges. None of the other five previous judges will be taking part," a BBC spokesperson says.
"We expect to be revealing the new judging line up in the next few days."