Marilyn Manson has apparently cast Harry Potter And The Half-Blood Prince star Emma Watson for the lead role of his upcoming film adaptation of Cinderella.According to The Sun, Manson's remake of the children's classic will be a musical and will require Watson - who plays Hermione Granger in the Harry potter films - to make her screen debut as a singer.In related news, Manson's debut film, Phantasmagoria: The Visions of Lewis Carroll which starts British model Lily Cole and his ex-girlfriend Evan Rachel Wood, will be released next year.