Kristen Stewart takes her responsibility to fans of the Twilight book series seriously -- and she knows how disappointed devotees of the bestselling novels will be if the movie doesn't live up to their expectations.

Kristen hits the big screen as Bella Swan in a little over a month and tells GQ of the project: "The series has this huge fan base. And they have very specific expectations. They're supportive. But they're crazy."

And what if fans don't like the direction 'Twilight' takes on the big screen? "It's like we're their pets," Kristen tells GQ. "If we're bad, they're going to punish us."

Fans will get their chance to decide for themselves whether the movie brings their dream of Bella and Edward's vampire love story to life on November 21, when the film swoops into theaters nationwide. The romantic thriller, directed by Catherine Hardwicke ('Thirteen'), co-stars Robert Pattinson as dreamy Edward Cullen; Taylor Lautner as his rival Jacob Black; Billy Burke as Papa Swan, Charlie; Peter Facinelli as the head of the Cullen clan, Carlisle; Elizabeth Reaser as Cullen mom Esme; Nikki Reed as beautiful Rosalie Cullen, Ashley Greene as impish Alice Cullen, Jackson Rathbone and Kellan Lutz as Cullen brothers Jasper and Emmett; and Cam Gigandet, Edi Gathegi and Rachelle Lefevre as evil vampires James, Laurent and Victoria.

To pick up the November issue of GQ that features Kristen, go to the newsstand starting on October 21.