When even Joan Jett says your performance is spot on, I think you can rest easy. Such is the case with Kristen Stewart, who's playing the fabled rocker in a biopic take on the Blackhearts. We were taken with the film when we caught "The Runaways" at Sundance, and now we're only a month away from its March 19 release.
To help pass the time until then, we've got a new image to throw into the mix, featuring Kristen rocking out in her skivvies. Check it out in full after the jump, and then click here for even more photos from "The Runaways."
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