The Insider.com

Jenny (formerly known as Jenny Craig) has just announced that one of music's biggest divas will now be representing the famous weight-loss company as a Brand Ambassador.

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Mariah Carey, the best-selling female artist of all time, will represent the company as it enters a new phase. The brand is taking an even more committed approach to leading America into a healthier future by promoting a fresh approach to physical activity and weight loss unlike anything anyone has ever seen.

Mariah is the perfect ambassador for the company as she found it to be effective in helping her drop her baby weight after the birth of her twins last summer. Mariah has lost 30 pounds since joining Jenny in July.

Click the video to hear about Mariah's mysterious ad campaign.