See How Skinny Jessica Simpson Looks in Her Latest Weight Watchers Ad!

Mother of two has been flaunting her slimmed-down body

Dayum, girl!

Jessica Simpson looks downright sexy in her latest ad for Weight Watchers.

A picture of the mother of two surfaced on the weight loss program's official Instagram earlier today, showing her posing in a skintight white dress.

The fitted frock highlighted Simpson's slimmed-down curves including her cinched waist and toned gams.

Simpson gushed about her progress in the commercial, saying, "I have a newfound determination that I'm really proud of."

She added, "I can honestly say that I've never been happier."

Weight Watchers captioned the photo, "The #powerofsupport is one reason Ambassador @JessicaSimpson loves attending Weight Watchers meeting."

During a previous advertisement with the company, Simpson admitted that slimming down for her upcoming nuptials to fiancé Eric Johnson has been one of her biggest motivators.

"The new year will definitely bring on the wedding bells which is exciting…I think it's about time," the bubbly blonde explained.

"Knowing that I have the wedding coming up is an incentive to stay on Weight Watchers, count my points and stay in the gym. I mean, when you see my dress, you'll know."

But her weight loss journey isn't only about looking fabulous in her wedding gown.

"I'm just trying to feel good in a pair of jeans and a T-shirt. I can't wait to be able to feel just comfortable in my skin and know that I'm back to the person I've been before. I know this time I'm going to be so much stronger and so much more empowered, because I really earned it and I really got here, and took the steps to get here."