Melissa Joan Hart Nutrisystem
"I love working with Nutrisystem," Hart, 36, said in a statement to ET Online. "The program is really delivering results for me and I look forward to long term success, staying motivated and helping others do the same."
The actress welcomed her third child, son Tucker, in September with husband Mark Wilkerson. Since then, Hart, also mom to sons Mason, 7, and Brady, 5, has already lost 20 pounds on the program since giving birth, according to ET Online.
"She mirrors our values and will resonate with our customers as authentic," Nutrisystem said in a statement of the actress. "Moving forward, you'll see us have an appropriate mix of inspiring celebrities and real life customers who have also enjoyed success."
Shortly after welcoming baby Tucker, Hart told Us Weekly that she was staying active after giving birth by taking care of her boys. "I know a lot of people with newborn babies that stay at home with the baby," she explained. "Maybe I'm a little selfish but I'm like, 'I want to watch my son at hockey,' so I bundle up the baby and bring him in a car seat and bring him with me. I go through the extra effort to be with the older ones too!"