Dakota Fanning, 15
Not many child actors are able to make the leap to adult-stardom. Dakota promises to be one of the few to pull it off. She gave us a glimpse of her grown-up bad-girl side in the Twilight sequel, New Moon, playing a member of vamp royalty. And her role as a teenage rock star in The Runaways promises to catapult her from freakishly-talented child prodigy to full-fledged Hollywood star.
Anna Kendrick, 24