The mother-of-two is flaunting her fit figure in a new Weight Watchers ad, showing off her slim post-baby bod in a tight little black dress.
In the clip, the blonde beauty says it feels "really good" to be back to her slimmed-down size. "My body, like my life, is a work in progress," the 33-year-old says in the ad.
So, what's Simpson's secret to staying slim?
"For breakfast I am an oatmeal girl," she recently told "Good Morning America." "Lunch, I do like bread so I will have a sandwich or something. But for dinner I try (to) keep it super clean."
Her diet plan is clearly paying off!
She's stayed busy running her business empire, but Jessica also wants to get back to her singing roots.
"I want to sing again," Jess explained. "I want my daughter to see me on stage. My fiancé has never even watched me perform. Which is crazy. And -- but that is my passion, that is my love, like, that is everything that I am."
We can't wait to see her back on stage!
What do you think of her new Weight Watchers commercial? Tell toofab in the comment section below, and click "Launch Gallery" above to see her most eye-popping looks.