Princess Stephanie – 57 – $100 Million

Despite being born into royalty, Princess Stéphanie of Monaco still managed to carve out a name for herself. Born as the youngest of the three children of Prince Rainier III and actress Grace Kelly, she had faced a lot of pressure early on, especially after being involved with her mother in a car accident that cost Kelly’s life. In the 1980s, after recovering from the accident, she established herself as a model and, eventually, a fashion designer. In addition, she launched a singing career, with her most notable being In the Closet with Michael Jackson.

Today, at age 57, Stéphanie has mostly focused on her duties as a member of the Monegasque royal family. She has created numerous charitable organizations tackling issues like youth empowerment, HIV/AIDS, and the arts. She has been an honorary board member of the Princess Grace Foundation-USA, where she helped organize concerts, auction sales, and galas to raise funds and investments for the foundation.