Jillian Michaels: ~ $8.77 million, Malibu
Celebrity personal trainer Jillian Michaels has built a fortune in fitness and has spent it accordingly when she shelled out almost $7 million for a three-bedroom Malibu house right on the ocean front. She has since listed all 3,157 square feet of it for $8.7 million, which is a great return on her investment, indeed. Audiences may recognize Jillian from such shows as The Biggest Loser, The Doctors, and Just Jillian.

