The Runaways.
Come to think of it, no discussion of "Chix that Rock" would be complete without Joan Jett. Both the Runaways, as well as her stuff with the Blackhearts , especially in the 80's, had a lot of material worth checking out.
Also, check out Pat Benatar. Great 80's female fronted pop-ish hard rock. Heartbreaker, Invincible and Hell Is For Children are some of the best rock songs with female vocals ever written.