Mariah Carey has lost 30 pounds on Jenny -- and she wants the world to know it!

The 41-year-old spokeswoman for Jenny Craig stars in a new ad for the weight loss brand, where she hams it up for cameras and flaunts her slimmer figure in both a silver mini-dress and a black bodysuit under a see-through overlay dress.

In between the pop diva's posing, Mariah is joined by three other Jenny clients for some girl talk, as the ladies dish about their respective weight loss journeys. Moroccan and Monroe's mom even cracks up laughing when one of the ladies complains about the math involved with some other diet plans. That's definitely a side of Mariah that we don't see often.

Click below to watch Mariah's newest Jenny commercial!

Nick Cannon's wife has been on a mission to get healthy since the birth of her babies last April. Mariah has shed a total of 70 pounds through the birth, diet and exercise, and hopes her role as Jenny spokeswoman will inspire others to get serious about their health as well.

How do you think Mariah looks? Sound off below!

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