Tentatively titled 'Marilyn', the film hails from Asylum Entertainment, the company behind 'The Kennedys' miniseries, which also touched upon Marilyn's story, reported Deadline.
The bombshell, whose life was intertwined with those of John F Kennedy and Robert Kennedy, was played in the mini by Charlotte Sullivan.
'Marilyn' has been penned by 'The Kennedys' writer Stephen Kronish based on the book The Secret Life of Marilyn Monroe by J Randy Taraborrelli.
Laurie Collyer is set to direct. Jonathan Koch, Steven Michaels, Keri Selig and Kronish will serve as executive producers.
'Marilyn' will follow last year's 'The Anna Nicole Story' and two other biopics of female entertainers who faced an untimely death that are in production- films about Aaliyah and Whitney Houston.