The 22-year-old says she hasn't been contacted to play heroine Anastasia Steele and neither has she read the "mummy porn" novel by EL James, reports thesun.co.uk
"I haven't read the book, I haven't read a script, nothing," said Watson. "There are so many movies you become attached to when I've literally never even received a phone call. It was the same way with 'The Girl With The Dragon Tattoo' - I never even saw a script," she added.
The "Harry Potter" actress says she has to explain to her family that they must not blindly trust whatever they read about her. "I told them just because there are 60 articles on the internet doesn't mean it's any less true than if there are three or four.
The thing is I'm not going to go out there every time someone attaches me to a film to say no or release a statement," she said. Other stars rumoured to be considered for the film are Emma Stone, Lucy Hale and Katie Cassidy.