Janet Jackson is in control … of her weight. The pop icon-turned-Nutrisystem pitchwoman unveiled her slimmed-down figure in a new ad that is set to debut on national television tomorrow (April 9). "This is what success looks like!" yells Jackson in the ad while showing off her svelte body.

Jackson, who admits to being an emotional eater, had a difficult time controlling her weight following the death of her brother Michael Jackson in 2009. Thanks to Nutrisystem's "Success" diet plan, the 45-year-old singer is looking slimmer although she wouldn't reveal how many pounds she lost.

"I’m going about this a different way by not putting a pound amount on it,” Jackson explained last year when she signed on to be a Nutrisystem spokesperson. “It’s about when I feel healthy, about when I feel good."

We had a hint that Jackson was doing well on her diet when photos from her shoot for Blackglama's 'What Becomes a Legend Most?" campaign popped up on the Internet. In some of the photos, we can actually see Janet's flat abs and killer legs.

Congratulations Janet on your weight loss. You look marvelous!

Do you think Janet can maintain her girlish figure? Tell us in the comments below.

Watch Janet Jackson New Nutrisystem Commercial