Kristen Stewart Hangs With Joan Jett On The Runaways Set

Most actors rarely spend time with the exeuctive producer of their movies but when your boss is Joan Jett and you're portraying the rock

legend on screen, all bets are off.

More Photos of Kristen and Joan

Kristen Stewart is now several weeks into shooting The Runaways, the coming-of-age biopic about the 1970s all-girl teen band that launched the careers of Joan Jett and Cherie Currie.  

Taking a break between her Twilight assignments, Kristen has become a dead ringer for Joan and seems to become more so with every day they spend together. Dakota Fanning costars are Cherie. The movie will hit theaters next spring.