Clarissa loses it all!

Melissa Joan Hart just revealed her 40-pound weight loss by posting a brand new bikini photo on Instagram. As the new face of NutriSystem, the former child star looks amazing in a pink two-piece and heels, flaunting her fab post-baby body.

"It's not everyday I like to show a lot of skin but these days I'm feeling confidant. Thanks Nutrisystem," she said about the photo.

The actress, 37, says she gained 60 pounds when she got pregnant in 2012.

"For me, it was important to bond with my child, as opposed to ‘lose the weight.' So I waited until I was ready, and I knew I had the time, and then I made it a priority that I would eat well," the "Melissa & Joey" star told ET.

"I don't wear bikinis even when I go to the beach, so when I put it on in front of the cameras and all these people, and my husband showed up -- it's nerve-wracking but the feeling is very satisfying," she explained of posing in a one-piece blue swimsuit on the set.

Her commercial drops April 21. Check out more celeb weight loss success stories in the gallery above!


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