So this is one of my favourite groups, bands, or whatever. I love that they are all girls haha and well, Joan Jett is one of my personal heroes:) They are called 'The Runaways' and last year there was this move called um... 'The Runaways' (lol) starring Dakota Fanning and Kristen Stewart (I am not a big fan of Kristen or Twilight, but I personally think she did an amazing job in this movie).
Here I post a trailer about the movie with a piece from the song 'Cherrie Bomb', which was a hit mostly in Japan in the mid 70's. The movie tells the story of how the band is formed and what happens years later.
The director is Floria Sigismondi, who is best known for doing this movie, I think, but she has also directed music videos for Marilyn Manson, David Bowie, Björk, The White Stripes, etc.
Conclusion: you go to your movie store, buy it or rent it (I really don't care), and voila! You watch it! :D You will also loove the soundtrack. There's mostly from the Runaways, but also Suzi Quatro, David Bowie and the Sex Pistols. So, you are gonna love it! :D cia ciaoo