Madonna in bid to play Wallis Simpson

"Madonna said she is fascinated about this American commoner who refused to conform or offer explanations for her tangled love life," the source added. "It was all systems go until the divorce [from Ritchie], when everything was put on the back-burner. When things in her life settle down this year, she's keen to get things going again." Casting of the other major roles – Edward VIII and Adolf Hitler – has yet to be announced.
http://www.guardian.co.uk/film/2009/feb/16/madonna-wallis-simpson-film