The Runaways
It's available for instant on Netflix. It's definitely worth the watch - Kristen Stewart, Dakota Fanning (as a sex kitten - WHAT?!), Alia Shawkat (who I love in everything I've ever seen her in)
Of course, I haven't read the book and I knew nothing about The Runaways, so take that for what it is.
Dakota Fanning is a very convincing budding lesbian/drug addict.