Feminism resources for girls?

[RagzReturnsRebooted]

DD (11) and her friend have been discussing feminism today and decided they are feminists. Excellent! Are there any books anyone can recommend? Or other resources or age appropriate topics anyone can suggest?
DD is used to me ranting about gender stereotypes, men in women's sport/spaces/prisons and lack of pockets on women's clothes, but I'm not sure where would be a good place to start and I'm not a particularly well informed feminist myself so any guidance is welcome. Or perhaps I should just leave them to it?

The FiLiA website has loads of blogs and podcasts on a complete range of feminist issues, I'm not sure if you would consider it age appropriate, but I'm sure there is plenty there for them to start reading or listening.

Thanks. Age appropriate is not a huge concern, we watch Call The Midwife together and a lot of people wouldn't consider that appropriate for an 11 year old!