If it wasn’t already obvious, Fifty Shades of Grey has officially become a phenomenon.

Fans of the risque novel, which began as Twilight fan fiction, have been clamoring to cast their favorite actors in the film adaptation. But some of the actors proposed for the lead roles are already saying “no.”

Selena Gomez recently said that the role of protagonist Anastasia Steele would be “too much” for her. Similarly, Nina Dobrev stated that she wouldn’t be interested in doing the film if she was cast alongside her Vampire Diaries co-star (and off-screen boyfriend) Ian Somerhalder.

Ian himself caused a stir with fans when he declared via Twitter that he was not “desperate” to play the lead role of Christian Grey, and may not even get the chance to audition for the part. Star Trek's Chris Pine isn't on board, revealing on The Tonight Show With Jay Leno that he definitely won't be doing it.

Fans of Gossip Girl star Blake Lively are eager for her to play Anastasia’s best friend, Kate Kavanagh. But the actress apparently hasn’t even heard of the book!

Who would you love to see in the big-screen adaptation? Let us know in the comments!

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