Aishwarya Rai Bachchan has been roped in to play the lead role in 'The Letter', an Indo-American film which is an adaptation of Isheeta Ganguly's musical theatre 'Three Women'. Isheeta, who'll direct the upcoming film, said she was originally looking to make it as a Hindi film. "When she (Aishwarya) read...script she felt...the film would fly in English," she added.