The movie was rumoured to feature adult content after Campbell-Bower gave an interview suggesting several characters get fully naked in the film.
"I would like to put everyone's mind at rest and let them know that the Volturi (characters) are not naked! Jamie (Campbell-Bower) has what you might call a dry sense of humour.
"Anyway, be assured that, even though we do want the look of the Volturi to be a bit of a surprise, they are always as in the book, fully clothed," Weitz told celebrity blogger Perez Hilton.
Campbell-Bower, who plays a member of the Volturi vampire clan in the film had said, "We just all sit there, completely naked, for one scene. Yeah, it's me, Michael Sheen and Christopher (Heyerdahl); we just sit there, naked."