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Universal Studios and author E.L. James know you desperately want to know which beautiful famous people will be bending and breaking and whipping and whooping each other in Fifty Shades of Grey movie, so they finally relented and made the casting official Monday morning. 

James announced the casting news in a series of tweets: 

(Ed. note: ew.)

So, there you go! Dakota Johnson and Charlie Hunnam will be your Anastasia and your Christian, spending the whole movie writhing and rubbing and wrestling with each other. Naked. Very, very, very naked. 

This marks another step in a serious star turn for Hunnam, who most recently led the summer's sleeper success story Pacific Rim. He's perhaps best known for his role on the FX series Sons of Anarchy, though. Playing Anastasia is a real get for Johnson, who is best known for smaller roles in The Social Network and 21 Jump Street

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