For the next eight years, Kristen Stewart didn't change her hair much. She chopped it into a shag to play the role of Joan Jett in 2010's "The Runaways," which took some time to grow out.

Kristen Stewart, Dakota Fanning, and Alia Shawkat in The Runaways. KStew as Joan Jett? Absolutely iconic. She nails Jett’s cool, detached vibe without turning her into a caricature. Even when the film ...