2. Mariah Carey ($535,000,000)
First, let us remind that these digits are only a rough estimate (they probably made way more than this). That being said, Mariah Carey enjoyed an $18,000,000 salary on American Idol for the time she spent there, and you could call that a mere hobby.
She had some ups and downs in her career, but you know the main saying in show biz, there’s no negative publicity. Hooking up with Eminem for a night or two only to not call him again can actually make you some money. Her most famous song, “Touch My Body” is thought to be one of the highest grossing hits ever.