The singer is working out seven days a week and dieting since she gave birth to twins Moroccan and Monroe on April 30, in a bid to be thinner than ever.

Mariah Carey wants to look as good as she did at her 1990s peak when she returns to TV screens this month on The X Factor. Find out how she’s getting the weight off!

“She works out a minimum of two hours a day, seven days a week now,” a source tells Star magazine.

And she’s dieting too, to try and shake off 25 more pounds.

“She’s on a spartan diet, cutting out refined sugar and white flour and most meat products,” the source adds.

“It’s making her crabby. But she’s leaving nothing to chance.”

Mariah, 42 has tweeted photos of her jogging with her pet dogs — and all that hard work is clearly paying off. She looks fantastic!

Remember, she gave birth to twins Moroccan and Monroe just four months ago!

But will she manage to regain the famous figure that made her one of the sexiest women in the world?

We can’t wait to find out when she steps out on stage at The X Factor premiere on September 21!

What do you think, HollyMoms? Is she doing the right thing? Or should she chill out and let the weight fall off naturally?

More Mariah on HollyBaby:

1. Mariah Carey Won’t Stop Talking About Her Miserable Pregnancy…And It’s Been THREE Months!
2. Mariah Carey Debuts Her Slim Post-Babies Body — She Gave Birth Only Two Months Ago!
3. Mariah Carey Shows Off Her Post-Babies Body In London! Nick Cannon Is So Proud!E

Kourtney, 31, claims she lost all her baby weight quickly after giving birth to Mason 15 months ago, by carrying her son everywhere she went — even using him as a gym accessory!

“I take Mason on lots of walks. Carrying him around him around is like carrying 20lbs all day,” Kourtney tells Look magazine, adding, “When he was a baby I’d do squats while holding him.” We’d love to see that in action!

But the reality TV star insists her cute tot can’t take all the credit for her fabulous figure — she combined her new fitness routine with a new healthier diet, “I was eating a lot of dried fruit and I didn’t know how much sugar that added. And now I’ll eat raw almonds instead of salted ones.”

But she’s not good ALL the time! “I’ll eat Oreos,” she says, “but I’ll eat two instead of a whole box of them. I think you have to treat yourself once in a while.”

How did you lose the babyweight HollyMoms? Share your mommy diet secrets with our readers!

– Ian Garland

New mom Jennifer Hudson, 29, brought her adorable son, David Ortunga, Jr., 1, to an event yesterday and she’s taken her post-baby shape-up to a whole new level! Wow, Jennifer! You look SO AMAZING!

Jennifer’s second album, I Remember Me is set to be released on March 22, 2011, and a new video for the first single off the album, “Where You At” came out this week. Congratulations, Jennifer! (On your new album and your hot new body!)

It’s hard to believe she packed on 45 pounds while pregnant with son, Teddy. She looked svelte in LA on Friday (Jan. 28).

Motherhood definitely agrees with Ali Larter. The first-time mom appeared radiant and slender, after getting her nails done on Friday (Jan. 28) at an LA salon. Can you believe the 34-year-old gave birth to a baby boy on December 20? That little black dress is a miracle worker!

Ali had to deal with an LA mudslide while in labor!

From the looks of it, almost all of Ali’s baby weight has melted away already. HollyMoms, how hard has it been for you to lose the baby weight?

Since the arrival of their son, Theodore, Ali and her husband, Hayes MacArthur, have been enjoying staying home and bonding with the 1-month-old boy. “We are so cocooned at home. We eat, snuggle, take walks in our yard,” Ali tells Us Weekly.

–Amy L. Harper

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Kate’s determined to keep the baby weight to a minimum this time. How big did you get when you had a baby on board?

Although she is basking in the joy of impending motherhood with her beau Matt Bellamy, Kate Hudson is terrified of gaining too much baby weight. The actress, 31, packed on the pounds when she was expecting her son, Ryder, in 2003 and she’s worried she will gain even more this time around. “Kate gained 60 pounds when she was pregnant with her son,” a friend tells In Touch. But Kate is trying hard not making that mistake again.

Goldie Hawn is thrilled Kate’s having another baby

“The day she found out she was pregnant with Ryder was the day she took out a license to eat,” her friend reveals. “She was even eating cupcakes for breakfast.”

“There’s nothing to be ashamed of when you blow up,” says Kate, whose son Ryder is now 7-years-old. She even confessed that she had a hard time controlling her cravings during her first pregnancy. “I would be eating ice cream, and my mom would literally pry the spoon away from me, saying, ‘You’ve had enough to last you a lifetime,” she told Vogue magazine in 2007.

Kate debuts her little baby bump

HollyBaby.com asked celebrity wellness coach Jackie Keller how healthy it is for a mom-to-be  to overindulge and she was quick to point out that pregnant women only need to consume 300 extra calories a day. “That whole eating for two concept is a myth,” Jackie tells us. “In order to ensure the fetus develops properly, those extra calories should come in the form of low-fat calcium-rich dairy products, whole grain carbohydrates, lean proteins and vitamin-rich fruits and vegetables.” No ice cream, Kate!

Matt Bellamy is stocking up on baby books!

But after the struggle she went through to drop those post-baby pounds, we think Kate will be following Jackie Keller’s advice. “Kate spent most of her time in the gym and dieting,” her friend says of her four month post-pregnancy routine. “She was determined to lose the weight, but it nearly killed her.” Tell us about your struggles to lose the baby weight, HollyMoms?

–Leigh Blickley

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It took the reality TV star took more than a year to lose the 50 pounds she packed on while pregnant with her son, Hank Baskett Jr. Here’s how she did it!

Kendra Wilkinson has struggled to get her body back into Playboy centerfold shape since giving birth to her son, Hank Jr., with her NFL player hubby, Hank Baskett, 28. But now, just over a year after her son’s arrival, the 25-year-old’s body is back in pre-baby shape! Isn’t it refreshing to read about a celebrity mom who didn’t drop the pregnancy pounds overnight?

Hank Jr. celebrates his first birthday

According to OK! magazine, Kendra was able to gradually slim down by making better choices when it came to her favorite foods. “I still order Chinese,” says Kendra. “But I get lettuce wraps and spicy green beans, not orange chicken.” Exchanging fatty fried entrees for more veggies is what helped the realty TV darling lose those last 15 pesky pounds. She’s so thrilled about her body that she’s showing it off on the December cover of Playboy.

Baby Hank already knows how to share

Besides a better diet, the new mom also squeezes in a workout every day. If she’s not in the gym doing 45 minutes of circuit training, she’s taking her 1-year-old for a stroll. Getting in shape while bonding with your baby is the best of both worlds! Way to go Kendra!

–Amy L. Harper

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If you want to look like supermodel Adriana Lima after you have a baby, it shouldn’t be too hard. All you have to do is eat a completely restriced diet and find time to work out for a couple hours every day! Easy, right? Well, OK, maybe not, but it certainly worked for her.

Read about how much sexier Adriana feels since giving birth!

After having her daughter, Valentina (who turned 1 in November), the runway beauty lost 35 pounds in under six months by working out for one to two hours a day with former boxer (and now go-to celebrity trainer) Michael Olijide, focusing on cardio exercises like boxing and jumping rope, while also cutting out carbohydrates and eating high-protein foods. “I did a combo of protein shakes, green veggies,” she tells OK! magazine, “everything grilled or steamed and four ounces of protein.”

After a while, whole grains were reintroduced to her diet, but since giving birth, Adriana has cut out unhealthy and high-fat foods, while also monitoring the size of her portions.

Check out these stars’ post-baby slim downs!

See? Totally easy, as long as you can find time to exercise and cut out the junk food!

–Roger Singer

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It’s nice to know that not all celebrity moms lose their pregnancy pounds a week after giving birth. Reality TV star Kourtney Kardashian weighed 140 pounds when she gave birth to her son, Mason, with Scott Disick, in December 2009 and now she’s down to 95 pounds and proudly baring her body, in a tiny bikini, on the cover of OK! magazine. “I love my new body,” the 31-year-old tells the magazine. “But for me, it’s about being a healthy mom, not a certain weight. I think the main focus should always be your baby. Your life drastically changes and you’re taking care of another human being.”

Mason can say his aunt Kim’s name!

Because she’s breastfeeding Mason, 1, Kourtney says that she has to eat all the time. But instead of chowing down on huge, and often unhealthy meals, she’s now enjoys smaller, low-calorie ones. “I try to make healthier choices,” says Kourtney, who’s been eating meals like salmon with brown rice and steamed carrots, sushi, steel-cut oatmeal and scrambled eggs with whole wheat lavash bread every two hours. And for a quick snack she swears by Quick Trim Fast Shakes. “It’s only 110 calories — you don’t have to think about it.”

And she’s loving the results of her revamped diet. “I’ve even noticed a difference in my hair,” she raves. “Everything just seems healthier. I feel better — I have better energy so it’s something I’ll continue after nursing.”

Kourtney’s brother Rob wants to get married and have a baby

But as we all know, HollyMoms, woman cannot live on carrot sticks alone. And Kourtney is no exception. “I’ll eat Oreo Double Stufs, but I’ll have two instead of eating a box of them. And I love chips!,” she says about her occasional indulgences, which also include Hostess Donettes.

Besides her new eating habits, Kourtney credits old-fashioned exercise with helping her shed the pounds and tone up her body, and she loves to include Mason every chance she gets. “I’d love to maybe work out more, but I also want to spend time with Mason. I take him on walks and when he was a baby, I’d do squats while holding him,” she says.

She takes Mason to music school

And she has advice for all the new moms out there. “Little meals throughout the day are realistic for people to follow. Try to get workouts in. It’s always so hard to start and get into it, but I think it’s a positive thing that everyone should try to do for themselves,” she tells OK!.

HollyMoms, how long did it take you to lose the baby weight? Share your diet and exercise tips with us!

–Amy L. Harper

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