According to the NY Daily News Kristen turned down the 'Superman' role

According to a source close to Zack Snyder, director of the upcoming "Superman: Man of Steel," K.Stew recently met with the filmmaker and his wife, Deborah - who's a producer on the film with Christopher ("Inception") Nolan - to discuss her taking the role of Lane.

The meeting could not have lasted long. The source says Stewart "ultimately passed" on being cast as the intrepid Daily Planet reporter who works alongside Clark Kent and becomes Superman's love interest.

Our source, who works with Snyder, says the director did not offer Stewart the role, but had "definite" interest in her playing the quick-thinking brunette.

Stewart, however, had specific reasons for turning down the part. The source says the intense-eyed actress, whose rumored involvement with "Twilight" co-star Robert Pattinson set the media swooning, was "caught off guard" by the success of that film franchise and wasn't ready to leap into a similar situation just yet. Instead, the source said, Stewart professed an interest in "smaller, independent films." (Stewart's spokeswoman said only that she "did not read for the part" and declined to elaborate.)