From  People magazine  Kristen Stewart dishes on what it was like shooting the highly anticipated Breaking Dawn sex scenes   "There are two big sex scenes in the two [final] films, and we did them fairly early, Stewart, 21, tells the U.K. edition of Glamour. "It was so weird, it didn't even feel like we were doing a scene within a Twilight film. I was like, 'Bella! What are you doing? Wow! Wh…