IRISH actor Jamie Dornan will film two versions of Fifty Shades of Grey: one censored and one X-rated.
It's emerged that one version of the movie will be geared towards mainstream cinema audiences, while another more explicit version will be released soon afterwards.
The former Calvin Klein model, from Holywood, Co Down, will star as fetish-obsessed billionaire Christian Grey in the film adaptation of the bestselling book.
The sex scenes featuring bondage, spanking and sadomasochism were a big part of the appeal of the so-called 'mommy porn' books by EL James.
They tell the story of college student Anastasia Steele, who embarks on an intense voyage of sexual discovery with her S&M loving boss.
The lead female role in the movie is being played by Dakota Johnson ( 24), the daughter of actors Melanie Griffith and Don Johnson.
However, the racy content created a headache for the film version's American producers. If they toned the content down too much, they risked alienating the book's fans, but if they were too raunchy, they could end up getting a rating that means mainstream cinemas won't show it.
Dana Brunetti, a lead producer on the €30m movie who has been listening to the demands of the books' female followers on Twitter said: "What we're kind of hearing from the fans is they want it dirty.
"We do not want this film to be seen as mommy porn - we want to keep it elevated but also give the fans what they want."
Producers hope the first version would get an R or restricted rating in America, meaning it can be seen by anyone aged 17 or over - in Ireland this would be 18.
But they then want to release a more explicit version, with the much rarer NC-17 certificate.
Playing the lead role in the movie is a big breakthrough for Jamie Dornan (31) who portrayed a serial killer in the BBC series The Fall.
He has previously said he's "not scared" about the film's sex scenes.