Female Authors

I recently loaded up the old bookshelf with some new books. In my anally rigid ways I quickly shelved these said books in alphabetical order by author. As I stood back to take in the fresh look of my collection i noticed I have a horrible habit of buying a lot of the same authors and they mostly tend to be authors born with a penis. I need a lot more of the opposite sex on my shelf to help balance out the gender scale. The great Margaret Atwood has a sprinkling of friends but she wants more, please recommend some good stuff I should be checking out.