Kristen Stewart: Ready to Film "The Runaways"

Stepping out to the Los Angeles studio, Kristen Stewart arrived to the set of "The Runaways" for the first day of filming on Monday (June 22).

Wearing a Joan Jett t-shirt, the "Twilight" actress stars as the iconic rock legend as she works alongside Dakota Fanning.

In related news, rumors that Miss Stewart was spotted cozying up to British funnyman Russell Brand have since been deemed as totally untrue.

"Russell was there," a source tells OK! of a My House party last week. "But he was talking to John Mayer a lot of the night. I'm not sure where the confusion even came from — John certainly doesn't look like Kristen."

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Enjoy the pictures of Kristen Stewart out to work on "The Runaways" (June 22).