The 20 year old, who also appeared alongside Johnny Depp in Sweeney Todd: The Demon Barber of Fleet Street, has joined Fanning and Canadian model Noot Seear among the new faces on the set of New Moon.
Campbell-Bower, who will play Caius in the Twilight sequel, says, "Shooting has already started in Canada and I'm going over in June."
The young star admits he has a lot of work to do between now and his start date - he has yet to read any of the Twilight novels.
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