Dakota talks to MTV about shooting three films with Kristen Stewart, how upset she was when her good friend cut her hair off for The Runaways and much more.

Dakota Fanning and Kristen Stewart have made three films together — from “New Moon” to their rocking girl-power flick “The Runaways” and then back to “The Twilight Saga” for “Eclipse” — and shooting the string of movies took some adjusting on their part. The three flicks have very different tones. Plus, Stewart and Fanning are mortal enemies in “Twilight” but best friends in “The Runaways.”

“It’s really funny, ’cause we did ‘New Moon’ before ['The Runaways'], and … we got so used to seeing each other like Joan [Jett played by Stewart] and Cherie [Currie played by Fanning] in those costumes,” Fanning said. “Her hair was short, and I had the wig on. And [then we] did ‘Eclipse.’ ”

While having to remember if they hated or loved each other on set was one of the difficulties, Stewart said Fanning had another big problem: “She hated when I cut my hair.”

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