Yesterday we reported that E.L. James signed The Social Network producers for Fifty Shades of Grey. Now, the film adaptation of the erotic novel that has been all anyone's talking about has a screenwriter!

English actor/writer Jim Piddock will pen the script for Fifty. Piddock has appeared in such films as The Five-Year Engagement, Get Him to the Greek, and The Prestige. His writing credits include Dwayne Johnson's Tooth Fairy and Samuel L. Jackson's The Man.

The film is quickly coming together, though casting is still a big question mark. Fans are still wondering who will play Christian and Anastasia, with names like Robert Pattinson, Bradley Cooper, Olivia Wilde, and Jennifer Lawrence being thrown around. Who do you think should star? Let us know in the comments section!