Pop star Madonna, who acted in 1996 movie Evita, is now ready to go behind the camera with Wallis - a film she will direct and produce. The film is about the twice-divorced American socialite Wallis Simpson for whom Edward VIII gave up the throne, reported thesun.co.uk.

The 51-year-old is trying to get David Tennant and Cate Blanchett to do the project.

"The final script is now written and the locations have been scouted. Madonna is now trying to assemble the cast and put the finances in place.

"The first scene of the film is an old woman in her nineties living on her own in a Parisian flat. She starts to tell her life story to her housekeeper. It turns out that the old woman is Wallis Simpson," said a source.