Weight Watchers adds more star power to its pitch-person roster, welcoming DJ Khaled as a spokesman. Headed out on a tour with Demi Lovato this year , he's already down 20 pounds enjoying meals like vegan meatloaf, lentil soup and vegetables.

"I can eat whatever I want - that's what I like about this system - as long as I don't go over my points," he says in a video clip promoting the partnership. "What I love about the Weight Watchers freestyle program is, it's a lifestyle."

Dieters on the system abide by a point system, where certain foods are allotted various points. When you hit your point limit for the day, it's time to quit eating, but you can decide how to get there.

"I'm craving some cookies," Khaled says in the clip. But he eats his healthy lunch, first, careful to calculate the points value before digging in.

In 2015, Oprah Winfrey became a partial owner and celebrity endorser, after which she quickly lost 15 pounds and made $45 million.

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