15. Madonna ($590 million)
Another huge icon, Madonna, is a phenomenal singer-songwriter who is considered to be one of the most influential people in popular culture.
She has been nicknamed “The Queen of Pop.” With famous hits like Like a Virgin, Like a Prayer, Vogue, and Hung Up, Madonna has been a revolutionary performer for decades.
As well as being successful, she’s also been well-known for being controversial and provocative. The American magazine Billboard declared Madonna as the most successful artist ever after the Beatles.