Joanne Rowling, better known by her pen names J.K. Rowling and Robert Galbraith, is a British novelist, philanthropist, film producer, television producer and screenwriter, best known for writing the Harry Potter fantasy series–which have sold more than 500 million copies, becoming the best-selling book series in history.

Rowling is also known for her “rags to riches” life story, where she went from living on state benefits to becoming the world’s first billionaire author.

Interestingly, she lost her billionaire status because she gave away much of her earnings to charity (that’s incredible of her to do that).