I've seen quite a few all girl bands.. but it's true most of them aren't very good.. and the ones that are are usually soft rock, alternative, poppy sounding..

I fairly recently jumped into an all chick project.. and it's going wayy better than I ever would have thought

if you want to check it out.. http://www.spankdriven.com

There are quite a few chick musicians here in Toronto.. it's just hard as hell finding good ones.. we got lucky :P plus the singer is very persistent so she contacted every female musician she could find.