Bestselling book Gone Girl was a literary phenomenon last Summer, and now it's coming to the big screen. Ben Affleck recently signed on to play Nick, and while the female lead hasn't been cast yet, director David Fincher is reportedly considering Rosamund Pike. Since one of the hottest roles in Hollywood hasn't been cast yet, though, we're sharing some ideas for who it could be. Click through to find out our ideas, along with some reader suggestions, for who should play the female lead, Amy. Beware if you haven't read the book yet — there are mild spoilers about Amy's character ahead.