Jillian Michaels | Est. $18 million

Jillian Michaels first rose to fame in 2004 when she appeared on the reality show The Biggest Loser as the show’s fitness instructor. Since then, she has become one of the most in-demand personal trainers and has been aiding people with their fitness journey through her work. She has amassed a total of $18 million from her career. Following her popularity in The Biggest Loser, she then starred in her own spin-off show named Losing It With Jillian. In 2010.

As her career grew, she managed to make a few investments to grow her money. Just recently, she launched her own fitness app, Jillian Michaels: The Fitness. Her app gained worldwide popularity and received several awards in the health and fitness categories from both Google and Apple. The app has in-app purchases; she probably makes a lot from it as she is viewed as a trusted health and fitness personality.