Mariah Carey – $300 Million

The Guinness World Records refer to her as the “Songbird Supreme” and it’s because of her noted five-octave range and signature whistle register. Interestingly, her age has also always been somewhat of a mystery, and at the moment, she could be either 49 or 50. Well, numbers don’t matter anyway when it comes to the fortune she keeps on amassing from her career as a singer/songwriter, actress, entrepreneur, and record producer. In 2018, she released her fifteenth studio album dubbed Caution and commenced its subsequent world tour in February 2019. Carey hasn’t let the fact that she’s undergoing bipolar treatment slow her down one bit.