Best All Girl Rock Band?

Fanny were pretty good , They were probably the first real Female Rock Band That really rocked.I seem to remember they had Suzi Quatro's sister as a member.(I think her name was Paddy) there First Three Albums were:Fanny, Charity Ball and Fanny Hill. Followed up by Mothers Pride & Rock & Roll Survivors .Charity Ball was there biggest hit I had it on a Single.