The secret to Melissa Joan Hart getting all slim post-kids? Simple…her now FORMALIZED involvement with Nutrisystem!

The Melissa & Joey star is the official spokesperson of the weight-loss company, and she’s excited to shed her pregnancy weight (after 3 kids, I get it, girl!). Says Hart:

“I love working with Nutrisystem,” Hart 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 36-year-old actress just had her third son, Tucker, in September with husband Mark Wilkerson. Since then, Hart has already lost 20 pounds on the program.

“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.”

All right!  I’m not a huge fan of Nutrisystem or Hart, but I am a fan of getting healthy.  If you can do it right, I’m all for it!

Photo: FameFlynet

Faith Hill is still striking…strikingly skinny, as seen at the Grammys last week!

Lots of celebs slim down for awards seasons, but Hill took it to a whole new level.  The singer lost so much weight that she managed to get down to 115 pounds, but nutrition experts are saying that’s not healthy in the slightest!

Dr. Fred Pescatore noted: “Her neck is extremely gaunt and her clavicles, they are ripping that bodice. It is certainly very aging on her and is an unhealthy weight.”

Dr. Majid Ali said: “Her color and general look is good, but she should not go lower.”

NutriFit CEO Jackie Keller divulged: “Little black dresses way of further slimming a person who is already tall and very slender. The dress she’s wearing may be purposely looser than it needs be, as is often done when someone is trying to look more full-figured, rather than thinner.”

Yikes!  C’mon, Faith! Fill out that dress, don’t swim around in it!

Photo: FameFlynet

Here’s our favorite Mom/Weight Watchers Spokeswoman Jessica Simpson looking better than ever (in my humble opinion).

Simpson went out for lunch with her fiance Eric Johnson in Santa Monica, California today rocking the pink blazer and lipstick, accenting her look with black sunglasses, top and gold clutch. I think she looks absolutely adorable. What do you think- is there a little boy or girl in there?

Photo: FameFlynet

Kelly Clarkson lost 18 pounds doing stuff that doesn’t seem SO crazy…sounds like she’s nipping those New Years Resolutions in the bud!

Says the singer:

“I lost 18 pounds. And I think that happens when you fall in love or date someone. If I’m going to be messing around, I gotta look good. There’s not a fad diet. I was working with a trainer, and she said, ‘You’d be amazed the amount of weight you can drop by halving your portions. I know it sounds crazy, but do it for two weeks and watch what happens.’ I just cut back my portions, I stopped eating late at night, and I work out a little more than I used to, and I literally dropped 18 pounds in a month. I think it happens when you get really busy. But when I’m on my off-time – girl, those 18 might come back.”

Sounds simple enough, and I definitely think keeping busy and a high activity level will drop those unwanted pounds (or at least help).  And, Miss Clarkson has a very refreshing stance on fad dieting.  She says:

“I’m not willing to do that. I’m willing to work a little bit because I want to be a healthy individual – which I always have been. I’ve put on weight, but that’s just what I’m happy with at that moment.”

I love this talented singer’s stance on her body image! Kelly’s got it all- a hot fiance, a booming career and a great outlook on life!  LOVE IT!

Photo: FameFlynet

I hate you, MEGAN FOX!

Fox has lost 13 of the 23 pounds she gained while pregnant with her first son, Noah, seemingly in an instant.  Apparently, it’s not because she’s been logging extra hours in the gym…

“I can’t work out yet because my body is still too fragile,” the 26-year-old actress told Us Weekly at the Dec. 12 Palladium Jewelry-sponsored premiere of This Is 40 in Hollywood. “I try to eat whatever I want, but I don’t eat any dairy, and I guess that’s the biggest diet tip. Try and stay away from dairy — especially if you’re a woman! It’s really hard on your hormones.”

So dairy’s the secret, Miss Perfect? Are you sure? So if I stop eating dairy I’ll look like you? Promise?