The "Biggest Loser" trainer is baring it all in the July/August issue of Shape magazine, where she's posing nude and showing off her seriously toned bod.
The fitness guru says that she feels better about herself now in her 40s than she did in her 20s.
"When I think back on my 20s and 30s, I look better now than I ever have," she tells the mag. "Yes, I'm older but I'm also wiser and that's a more intrinsic type of beauty."
So, how does Jillian maintain this fit physique?
Michaels regularly hits the gym to stay in shape, but she admits that being strong is key. "It's important for women to have overall strength, because when you feel physically powerful, it transcends into every facet of your life,” she declares.
While the brunette beauty looks amazing, she still has some imperfections. "Do I want to have a better butt? Sure, but I'm healthy and can wear my skinny jeans. And that's good enough!" she says.
Good enough, indeed!
For more with Jillian Michaels, pick up the July/August issue of Shape, on newsstands now.
Click "Launch Gallery" above to see more celebrity beach bods.