Josh Horowitz from MTV clears it up.

Warning language, but a look at part of her Twilight life.

Details on how to get the magazine issue here.

Our favorite quote from the article is this:

Me and Rob got into a lot of trouble,” she told me with a smile. “We wanted it to be not so polished. Catherine was all for that. But we were getting notes from the studio. They wanted me to smile all the time. They wanted Rob to be not so brooding. We were like, ‘No! You need to brood your ass off.‘” A worldwide box-office take of almost 400$ million certainly proved that the audience was ready for an unsmiling Bella and a brooding Edward. The fact that emotionally involved fans have taken the films so personally has only increased the sense of responsibility Stewart already felt to her character, to the point where Bill Condon, the director of the last two installments, affectionately calls her the “Twilight-book Nazi,” because her commitment to staying faithful to the novel.”

You can catch some scans here