Emma Watson has made it clear she has no interest in taking the coveted lead role in the upcoming big screen adaptation of raunchy bestseller "Fifty Shades of Grey."

Newly leaked documents from German movie studio Constantin Film appeared to suggest the Harry Potter star has been cast as the racy book's adventurous college student Anastasia Steele.

Watson has now taken to her Twitter page to respond to the speculation, writing, "Who here actually thinks I would do 50 Shades of Grey as a movie? Like really. For real. In real life."

The star later added, "Good. Well that's sorted then."

Watson was previously linked to the role last year and said of the rumors at the time, "I haven't read the book, I haven't a 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."

Mila Kunis, Lily Collins and Nina Dobrev are among the other screen beauties who have been tipped to play author E.L. James' literary heroine in the much-anticipated film, while Ian Somerhalder is a fan favorite to play wealthy entrepreneur Christian Grey.