Auditions will begin in January for the new prime time BBC talent search.
Over the Rainbow is looking for a female performer to play Dorothy in a new West End production of The Wizard of Oz.
Andrew Lloyd Webber (pictured) is to return after the success of previous shows How Do You Solve a Problem Like Maria, Any Dream Will Do and I'd Do Anything. Graham Norton is also set to return as host of the popular BBC1 series.
Producers are calling for applicants via their website. Visit www.bbc.co.uk/dorothy for further info. You must be aged 16 or over by 26th June 2009.