24/10/2013 03:51 BST | Updated 24/10/2013 07:14 BST

'Fifty Shades Of Grey' To Star Former Calvin Klein Underwear Model Jamie Dornan In Lead Role Of Christian Grey

After weeks of speculation, Jamie Dornan has reportedly signed on to play Christian Grey in the forthcoming big screen adaption of 'Fifty Shades Of Grey'.

The former Calvin Klein model - who recently starred in BBC2's 'The Fall' - will replace Charlie Hunnam in the role after he decided to leave the project just a month after he was announced as the lead.

jamie dornan

Jamie Dornan

According to Variety, Jamie, 31, will star opposite Dakota Johnson, who has been signed to play Anastasia Steele.

WHO IS JAMIE DORNAN? From Keira To 'The Fall'

Other stars rumoured to be in the frame for the lead role included Matt Bomer, Alexander Skarsgard, Theo James, Scott Eastwood, Billy Magnussen and Christian Cooke.

Production on the film is due to start in November and is due to hit the big screen in August next year.

Belfast-born Jamie was previously best known for posing in his pants as the face and body of Calvin Klein underwear and being Keira Knightley's boyfriend but has since gone on to carve out an acting career with acclaimed roles in 'Marie Antoinette', 'Once Upon A Time' and 'The Fall'.

His co-star in 'The Fall' Bronagh Waugh tweeted congratulations to him on Thursday morning, writing:

Photo galleryJamie Dornan Pictures See Gallery