'Fifty Shades Of Grey' Author E L James Knows Who She Wants In Film

Author tells Katie Couric she's narrowed it down to seven actors to fill the roles of Ana Steele and Christian Grey.

With all the hype and anticipation around who will play Christian Grey and Ana Steele when "Fifty Shades of Grey" hits the big screen, the woman behind the phenomenon, E L James, put her two cents in on who should play the roles.

"It's a sort of collaborative effort. There's a studio. There's a production company. There's two producers and at some point there's going to be a director, so I'm sure everyone will have an input into that. I have three people who could play Christian," she told Katie Couric on her talk show on Monday. "And I think four who could play Ana, and I'm not going to tell you any of them."

No word on whether Justin Bieber is in the running. The singer recently made headlines when he joked on a U.K. talk show, "The Jonathan Ross Show," that he was in talks to star in the film. While he may not actually be a contender to play billionaire playboy Christian, a number of other folks have been, including "Vampire Diaries" star Ian Somerhalder and most recently "The Canyons" actor (and adult film star) James Deen.

In addition to looking ahead to the in-the-works film, Jthe author also shared on Couric's talk show that she might revisit the "Fifty Shades" story in the future, this time with more from the Christian POV. "Maybe. I actually hold Random House responsible for this, because they made me change from 'Outtakes' to 'Shades of Christian.' I just put it in there as an outtake. He's a very interesting headspace to be in, so maybe, but I'd like to try and write something else, and then maybe revisit him. He's really hard work," James laughed.

Production on "Fifty Shades" has been moving along all summer. "The Social Network" producers Michael De Luca and Dana Brunetti were recruited to produce the film. Casting for the film's leads has been heavily discussed with no real confirmation of who might tackle the kinky parts for the big screen. For a time Angelina Jolie was rumored to be a contender to direct, but that turned out to be nothing more than Internet fodder.

Who do you think should fill the roles of Christian Grey and Ana Steele on the big screen? Leave your picks in the comments section below!