The producer, Harvey Weinstein, of the film has revealed that Perry, 27, is at the top of his casting wish list as he starts work on the ambitious production, Ace Showbiz reported.
"If the movie works, I would try to make it a musical and I would go to Katy first. I think she can play Marilyn onthe Broadway stage... I think she would be amazing," he said.
And Weinstein believes the 'I Kissed a Girl' hitmaker has given the new film a big boost - even though she's not in it. "A remix of Katy's new song 'The One That Got Away' features in a new trailer for the movie - and that has created interest among her fans.
"Katy posted about it on her Twitter and Facebook (accounts) and the next thing you know 250,000 people have downloaded the trailer in an hour," he added.
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