10. Oprah Winfrey ($3 billion)
Oprah Winfrey requires no introduction to most of us, and some of us even idolize her as well. Even though she has a little over $3 billion, she is the only woman to make it to our list. The second woman in the ranks, is the author of Harry Potter, J.K Rowling with a little over $1 billion. She was born to a very poor family in rural Mississippi and began her career as a co anchor for a local evening news channel and now, she has her own network- The Oprah Winfrey Network, which took a partnership with the Discovery Communications in January of 2008.