Charlie Hunnam & Dakota Johnson cast in Fifty Shades of Grey

After much speculation, the movie adaptation of literary phenomenon Fifty Shades of Grey has found its leads.

While Hunnam has been a rumoured contender for leading man/sexy sadist Christian Grey for a while (insert your own Pacific Rimming gag here), Johnson is a relative, comparative unknown.

Best known for her work on sitcom Ben & Kate, she's also popped up in The Social Network and The Five-Year Engagement , and looks set to propel her into global stardom when she takes on the role of Anastasia - a sexually naive virgin who is introduced to the kinkier side of relationships when she meets S&M aficionado Christian.

Fifty Shades of Grey is set for global theatrical release 1 August 2014.