Danielle Steel, 70 — Est. $350M
Danielle Steel is considered as one of the best fiction writers of our time. She has published over 174 books and sold more than 800 million copies the world over. In 1972, she published her first novel Going Home and it set the precedence in terms of themes for the rest of her novels. Her novels often focus on aspects like human relationships, romance, and family issues. Steel has managed the feat of having all her novels become bestsellers, including the titles issued in hardback. Following her son’s suicide, Steel launched the Nick Traina Foundation to help people suffering from mental issues recover.
