Madonna is arguably one of the most successful women performers of all time. She has sold over 300 million records, making her the best selling female artist of all times. Madonna dropped out of school during the late 70s. She moved to New York with only the clothes on her back and worked at Dunkin’ Doughnuts as a server. In her off time, she learned dance. In recent years, she continues to tour and promote philanthropical causes that further her cause to support Malawi orphans. Madonna is worth approximately $800 million.