Just in case you're curious, here are the best selling female authors:
1.) Jane Austen - 4 billion (total sales)
2.) Agatha Christie - 2 billion
3.) Barbara Cartland - 1 billion
4.) Danielle Steele - 800 million
5.) Enid Blyton - 600 million
6.) JK Rowling - 450 million
7.) Jackie Collins - 400 million
8.) Janet Dailey - 350 million
9.) Nora Roberts - 300 million
10.) Beatrix Potter - 150 million