Madonna, 60 — Est. $850M
Madonna is also known as the Queen of Pop and she earned worldwide fame for pushing boundaries and using out-of-this-world imagery in her music videos. To date, she has sold more than 250M records. Other than being a professional singer, Madonna is a savvy business lady. She is involved in numerous merchandising deals and loves to invest in property and fine art. Even after clocking 60, Madonna is not retiring just yet. She has a new song with Columbian singer Maluma. The duo will be performing this new hit at the 2019 Billboard Music Awards.