Stewart, Fanning committed to 'Runaways'

Kristen Stewart and Dakota Fanning have spoken about their dedication to new movie The Runaways.

The actresses revealed that they spent time researching the band to ensure that they portrayed their characters as real as possible.

Fanning, 16, told MTV: "We knew we were going to have a scene where we were going to have to sign something, so you need to ask [the real-life people you're portraying]."

Stewart, 19, said: "Joan [has a distinctive writing style]; I had a couple other little writing bits [I noticed] because I've seen her write. It's almost like she's hiding [the pen]."

The Twilight star added: "[Joan] does write a little weird. And that's why it was so great having her around, not just [for little stuff like that], but for the emotional connection to capture an essence, and they are such vivid people. It was great to have her there."