Sex and the City actress Cynthia Nixon will be playing the role of American poet Emily Dickinson in biopic A Quiet Passion.
Deep Blue Sea director Terence Davies wrote the screenplay and will direct the film.
A thrilled Cynthia said: "When I read what Terence had written, I was so consumed by the character he had so beautifully put on the page."
Terence admitted that the part had been specifically written for the actress, and called it "the dream casting you would hope for."
He said: "I never, for a moment, imagined my wishes would materialise. Cynthia has such a strong feeling for the work - and now she is our Emily Dickinson. I am over the moon."
The film, about one of America's greatest poets, will span Emily's life from a "precocious schoolgirl to a tortured recluse".
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