Reports emerged last month suggesting the Harry Potter star was in talks to play the book's heroine Anastasia Steele, but Watson has no idea where the gossip came from and she had to set her loved ones straight about the speculation.
She tells U.S. website EW.com, "I haven't read the book, I haven't read a script, nothing. There are so many movies you become attached to when I've literally never even received a phone call.
"I told them (family and friends) just because there are 60 articles on the Internet doesn't mean it's any less true than if there are three or four."
However, the 22 year old is used to unfounded casting rumours. She adds, "It was the same way with The Girl With the Dragon Tattoo - I never even saw a script!"
Who do you think should star as Ana in the Fifty Shades Of Grey film?