Bye-bye, baby bumps! Hello, new bodies. Shedding weight after a baby can be as difficult as giving birth, and there's more pressure than ever for famous moms to slip into their skinny jeans right after their children are born. Wonderwall.com is taking a look back at how some famous mommies — from Emily Ratajkowski, Jessica Simpson and Cardi B to Emma Stone, Kim Kardashian, Blake Lively and more — have transformed their bodies post-baby, starting with this music star… A pregnant Halsey is seen here on a grocery store run in April 2021, about three months before she gave birth to her first child with boyfriend Alev Aydin in July — a baby they named Ender Ridley. Less than two months later, Halsey looked incredible when she stepped out with Alev in New York City on Sept. 8, 2021, for a Fashion Week party.
Keep reading to see more stars' pregnancy and post-baby bodies…
Christina Milian stepped out for the grand opening of her Beignet Box Cafe in Los Angeles's Studio City neighborhood on April 10, 2021, just two weeks before she gave birth to her third child, son Kenna.
Three months after welcoming her third child in April 2021, Christina Milian — who also gave birth in 2020 and 2010 — was in a bikini enjoying the summer sun on a friend's yacht in Cannes, France, on Aug. 2.
"Selling Sunset" star Christine Quinn was photographed leaving a yoga class nine days before having an emergency C-section to deliver her first child, son Christian Georges Dumontet, with husband Christian Richard on May 15, 2021.
Less than three weeks later on June 3, "Selling Sunset" star Christine Quinn was photographed wearing a crop top. "I'm definitely not putting pressure on myself to go back to any pre-baby whatever because what my body went through and what women deal with when they have babies is really crazy," she told Us Weekly on June 1, adding that she was still "swollen" from her surgery.
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Emma Stone is seen here running errands in Los Angeles in February 2021 three weeks before she gave birth to daughter Louise, her first child with husband Dave McCary, a former segment director on "Saturday Night Live," in March.
Two months after welcoming daughter Louise, Emma Stone hit the red carpet for the Hollywood premiere of her Disney movie "Cruella" on May 18, 2021.
Emily Ratajkowski didn't shy away from showing off her baby body on Instagram while pregnant with her first child. She shared this mirror selfie on Jan. 22, 2021, about a month and a half before her little one arrived.
Define "insanity." Emily Ratajkowski posted this mirror selfie showing off her post-baby body on Instagram on March 19, 2021, just 11 days after her first child, Sylvester Apollo Bear, arrived. (In case there's any question about when this photo was taken: Peep the baby lounger on her bed!)
Less than three months after she and musician husband Taylor Goldsmith welcomed their first child, son Gus, in February 2021, Mandy returned to the red carpet at the MTV Movie & TV Awards on May 16, 2021.
Katharine McPhee stepped out in Los Angeles on Feb. 2, 2021, just a few weeks before giving birth to her first child, son Ren, with husband David Foster. Just a few weeks later, she revealed her post-baby body on Instagram. Keep reading to see Kat's transformation…
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Less than a month after giving birth to son Ren — her first child with husband David Foster — singer-actress Katharine McPhee stunned in an Instagram photo that showed her decked out in a dark green dress and sequined face mask to mark St. Patrick's Day on March 17, 2021.
Actress Emma Roberts showed off her baby bump on Dec. 9, 2020 — just a few weeks before she gave birth to her first child with boyfriend Garrett Hedlund, son Rhodes Robert. Keep reading to see how quickly she bounced back after giving birth…
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Emma Roberts looked great in a fitted white T-shirt and jeans as she stepped out for a walk with boyfriend Garrett Hedlund and son Rhodes in Los Angeles on March 28, 2021, three months after she gave birth.
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Pregnant Karlie Kloss was photographed in New York City on Dec. 10, 2020, about three months before she and husband Joshua Kushner welcomed their first child.
On April 9, 2021 — less than a month after giving birth — model Karlie Kloss showed off her post-baby body in a tank top and jeans while on a coffee run.
"Gossip Girl" and "The Orville" actress Jessica Szohr gave birth to Bowie Ella, her first child with Nashville Predators hockey star Brad Richardson, in January 2021. She's seen here in a selfie she snapped while in her third trimester in late October 2020. Keep reading to see the selfie she shared six weeks after delivery…
Jessica Szohr shared this bathroom selfie in February 2021 — six weeks after giving birth to her first child. "Still blows my mind that I grew a little human inside me. My body transformed into her home for 10 months. While I look forward to getting back to exercising, I am grateful for my fast metabolism and I am proud of my body… it is resilient and strong!" she captioned the photo. "And with the support of my @bumpsuit waist trainer – I always felt in shape. Kept my mid area in one place and wasn't uncomfortable… and trust me I know what uncomfortable feels like."
Blake Lively made a big announcement back on May 2, 2019, while attending the premiere of hubby Ryan Reynolds' movie "Pokemon: Detective Pikachu" when she arrived on the red carpet with a baby bump. Keep reading to see her red carpet return after she delivered her third child…
Is this the fanciest post-pregnancy return to the red carpet or what?! Blake Lively showed off her post-baby bod on Jan. 27, 2020, at the premiere of her film "The Rhythm Section" in a sleek black velvet Dolce&Gabbana gown. Three months earlier, the actress's husband, Ryan Reynolds, revealed that they'd recently welcomed their third child.
Jessica Simpson cradled her baby bump while highly pregnant with her third child, daughter Birdie Mae Johnson, at the 25th Annual Fashion Footwear Association of New York Shoes on Sale Gala presented by QVC in New York City on Oct. 11, 2018. Her little girl arrived five months later, in March 2019. Not long after that, she debuted a major body transformation…
Jessica Simpson revealed on Instagram in late September 2019 that she lost 100 pounds in six months after tipping the scale at 240 pounds following the birth of her third child, daughter Birdie Mae. "[I'm] so proud to feel like myself again. Even when it felt impossible, I chose to work harder," she captioned a photo of herself during her "first trip away" from her new addition. The very next day, she showed off her post-baby body for the paparazzi during a Sept. 25 outing in New York City. But it wasn't the first time she showed off a major baby-bod transformation…
After gaining a bunch of weight during her first pregnancy, Jessica Simpson teamed up with Weight Watchers to get back on track. But then she got pregnant again! So when she gave birth to her son, Ace, in June 2013, she immediately jumped back on the Weight Watchers train — and the results were pretty fantastic!
Nine months after giving birth to her second child, Jessica Simpson looked better than ever! The singer ate healthy food and exercised regularly to help her lose the 60 pounds she gained during her two pregnancies. By March 2014, she was showing off her slim and toned legs in a pair of Daisy Dukes!
Anne Hathaway cradled her baby bump while rocking a gorgeous Oscar de la Renta ensemble with a peplum waist that perfectly accentuated her belly during the "Modern Love" premiere on Oct. 10, 2019. Not long after that, her second child arrived…
Anne Hathaway and husband Adam Shulman sparked speculation that their second child had arrived when they stepped out with their son, Jonathan, and a baby carrier in Connecticut on Dec. 8, 2019. Though they never officially announced baby No. 2's birth, the "Les Misérables" actress made it clear that he or she was here when she attended the Critics' Choice Awards on Jan. 12, 2020, wearing a gorgeous gold Versace gown that showed off her trim post-baby body.
Kim Kardashian West reportedly gained 50 pounds while pregnant with daughter North West! After the reality TV star gave birth, she laid low, worked out hard, followed the Atkins diet and only emerged once she was happy with her bod…
Four months after giving birth to North West on June 15, 2013, reality TV star Kim Kardashian showed off her post-baby curves in a lace two-piece look while celebrating her 33rd birthday in Las Vegas.
Joanna Krupa didn't shy away from flaunting her pregnancy curves in a white dress during an outing in Los Angeles on Aug. 13, 2019. Less than three months later, she welcomed her first child, daughter Asha-Leigh Presley Nunes. Keep reading to see how she showed off her post-baby body not long after that…
Just two weeks after she welcomed her first child, Joanna Krupa debuted her post-baby body in a curve-hugging LBD at the Los Angeles Police Memorial Foundation Heroes for Heroes Celebrity Poker Tournament with the support of PokerStars and the LA Retired Fire & Police Association on Nov. 17, 2019.
Diane Kruger was in full bloom in a floral maxidress while out and about in New York City on Sept. 4, 2018. She gave birth to her first child with boyfriend Norman Reedus, a daughter, less than two months later.
Less than five months after it was revealed she'd given birth to her first child with boyfriend Norman Reedus, Diane Kruger posted this photo of her gym-honed body after baby. "Am I showing off ? F*** yeah. 'cause it's been hard work to get my abs back. I didn't think it was possible after having a baby. And certainly not at my age," the actress, who gave birth at 42, captioned the pic she posted on March 16, 2019. "I want to thank [fitness influencer] @hannahbower2 for sharing her journey and helping me get motivated. I don't have a trainer, but I've been committed to get my body back. For myself first….but also for my 👻 The female body is AMAZING 😉."
A week before she gave birth to her third child — daughter Rani Rose — pregnant Kate Hudson stepped out for smoothies with boyfriend Danny Fujikawa.
Five weeks after giving birth to her daughter, Kate Hudson attended an event for the World Food Programme in Los Angeles on Nov. 7, 2018. A few weeks after that, she posted a midriff-revealing selfie in workout clothes, explaining that she was exercising again. "I am on a mission right now to get back to my fighting weight 😉 and my strong body/mind back," she captioned it in part. "I want to bring you in on some of this journey." In December, Kate was announced as a 2019 global ambassador for WW — the company formerly known as Weight Watchers.
After months of speculation, Cardi B finally confirmed in April 2018 that she was expecting her first child with husband Offset. She's seen here performing at the Billboard Latin Music Awards a few weeks after her baby bump reveal.
Just six weeks after giving birth to daughter Kulture Kiari Cephus, Cardi B hit her first red carpet as a mom when she arrived at the MTV Video Music Awards in New York City on Aug. 20, 2018. Fans could hardly believe she'd had a baby less than two months earlier.
In September 2017, Kensington Palace announced that Duchess Kate and Prince William were expecting their third child. As one of the most photographed people in the world, millions watched Kate's baby bump grow and grow. Keep reading to see her less than a month after giving birth!
Duchess Kate revealed her post-baby body at Prince Harry and Duchess Meghan's royal wedding on May 19, 2018. The nuptials took place less than four weeks after she gave birth to her third child, Prince Louis.
Elsa Pataky was pregnant with twins when she attended the 2014 Academy Awards with husband Chris Hemsworth.
Elsa Pataky didn't look like she'd given birth to twins a month earlier when she stepped out with husband Chris Hemsworth and toddler daughter India in April 2014.
Two months after Zoe Saldana was snapped on this outing with her husband, Marco Perego, in Los Angeles on Oct. 26, 2014, she welcomed twins!
Zoe Saldana looked beautiful at the Academy Awards on Feb. 22, 2015 — less than two months after giving birth to twins.
Blake Lively is seen here during an outing in New York City on Dec. 4, 2014, a couple of weeks before she welcomed her first child, daughter James Reynolds.
Less than two months after she gave birth to her first child, Blake Lively made the rounds at New York Fashion Week. She's seen here at the Gabriela Cadena presentation on Feb. 12, 2015.
In September 2017, reports emerged claiming that Khloe Kardashian was pregnant with her first child. She waited until December to confirm that she was having a baby with NBA player Tristan Thompson, and in the months that followed, she proudly displayed her growing bump, as she did here at the Klutch Sports Group's "More Than A Game" dinner at Beauty & Essex in Los Angeles in February 2018.
In mid-July 2018, Khloe Kardashian took to her app to reveal that she'd lost 33 pounds since giving birth to daughter True Thompson three months earlier. She insisted she "didn't put any pressure on myself to lose the baby weight. I just wanted to get back to my regular routine from before I got pregnant, which was working out five to six times a week." Her trainer, Don Brooks, told TMZ that he helped Khloe by using his "Don-A-Matrix method," which uses "resistance training and cardiovascular exercises all in one movement." Khloe worked out six days a week at first then added some "two-a-days" to her routine, Don shared. In June, Khloe revealed details of the low-carb diet plan she used to shed pounds postpartum. "I'm currently on a low-carb diet that my nutritionist, Dr. Goglia, gave me. It has lots of protein, so I'm able to go all out at the gym," she explained before revealing the specific snacks and meals she eats.
In November, 2016, Amanda Seyfried announced that she was expecting her first child with her fiance, Thomas Sadoski. The news broke after she was seen sporting a tiny baby bump on the red carpet. She continued to show off her bump at other red carpets too, including on March 1, 2017, at the premiere of "The Last Word."
Amanda Seyfried gave birth to her baby, a daughter, in March 2017. It was also announced around the same time that the actress — seen here five months later — and Thomas Sadoski had secretly gotten married too!
Nikki Reed and husband Ian Somerhalder revealed that they were expecting their first child in May 2017. When they announced, Nikki was quite far along. "This has been the most special time of our lives and we wanted to keep it between the three of us for as long as possible so we could enjoy this time with each other and our little one who is growing so fast…because that's what they do, they grow so fast," Ian said.
Nikki Reed showed off her post-baby body a month after giving birth on Aug. 24 on Instagram. She posted this image of herself doing a yoga stretch clad in workout gear with her brother. "'Hey brother stay away from my uterus.' Totally normal thing to say to your brother postpartum," Nikki joked.
Scarlett Johansson kept her baby bump mostly under wraps while pregnant with daughter Rose Dauriac. But a photographer managed to snap the A-list actress when she stepped out in New York City on July 12, 2014. Less than two months later, Scarlett's rep confirmed that she'd welcomed her first child.
Scarlett Johansson looked tiny next to Eddie Redmayne at a screening of his film "The Theory of Everything" in New York City on Nov. 3, 2014. It's hard to believe she'd only given birth a few months earlier.
Emily Blunt was pregnant with baby number two when she attended the "Manus x Machina: Fashion In An Age Of Technology" Costume Institute Gala at the Metropolitan Museum of Art in New York on May 2, 2016, wearing a gorgeous blue Michael Kors gown.
News broke in January 2016 that Keri Russell and her "The Americans" co-star Matthew Rhys were expecting their first child together. Keri, who has two older children from a previous relationship, clearly knew how to dress her baby bump stylishly — like here in a casual dress, a lightweight trench coat and a pair of white sneakers.
Keri Russell unveiled her post-baby body during the 70th Annual Tony Awards in New York City on June 12, 2016 — just a few weeks after she gave birth to son Sam Rhys.
In August 2016, Rob Kardashian's fiancée, Blac Chyna, revealed her pregnancy weight gain and post-birth weight-loss goal. "So I weighed in I'm 183lbs, and loving it! So far I gained 48lbs," the 5-foot-2 reality star wrote on Snapchat (she's seen here a few months later in October). "My goal weight after the baby will be 130lbs — I was 135lbs b4 the baby. I truly believe I will be 200lbs when I [deliver]," she added, "that's 17lbs away."
Nine days after welcoming daughter Dream with fiance Rob Kardashian, Blac Chyna stepped out to reveal her post-baby body for the first time during a Nov. 19, 2016, visit to a Los Angeles cafe. The very next day, she posted Snapchat and Instagram videos of herself showing off her shrinking midsection while wearing sweatpants and a white crop top.
Rumors of a pregnancy had been swirling for a few months, but it wasn't until Carey Mulligan stepped out at the 2015 Tony Awards — she was nominated for her work in "Skylight" — that she confirmed the news. Although, despite the loose fabric of her gown, her bump was hardly noticeable.
Carey Mulligan made her first public appearance a month after giving birth to her first child, a daughter named Evelyn, with husband Marcus Mumford in 2015. By the end of the year (seen here), the "Suffragette" actress appeared to be back to her pre-baby weight when she wore this patterned Gucci dress to the Moet British Independent Film Awards in London on Dec. 6, 2015.
Duchess Kate barely had a bump while pregnant with Princess Charlotte.
A little over a month after giving birth to Princess Charlotte, Duchess Kate stepped out for a fun day with son Prince George on June 14, 2015.
Kelly Rowland remained healthy and active during her pregnancy with son Titan, whom she welcomed in November 2014.
Mila Kunis reportedly kept healthy during her first pregnancy by taking yoga classes. She looked great after a workout in Los Angeles on Aug. 23, 2014. Just a month later, Mila gave birth to daughter Wyatt, her first child with Ashton Kutcher.
Four months after she gave birth to her first child, Mila Kunis hit the red carpet at the premiere of her film "Jupiter Ascending" on Feb. 2, 2015.
Kendra Wilkinson flaunted her pregnancy curves in a skin-tight orange dress at QVC's fifth annual Red Carpet Style event on Feb. 28, 2014. Three months later, she welcomed her second child, daughter Alijah Baskett.
Five months after she welcomed baby No. 2, Kendra Wilkinson posed for a promotional photo for her appearance on "I'm A Celebrity…Get Me Out Of Here!" on Nov. 11, 2014.
Rosamund Pike was in her third trimester when she attended the New York Film Festival premiere of her movie "Gone Girl" on Sept. 26, 2014. Two months later, she welcomed her second child with boyfriend Robie Uniacke. Shortly after that, her baby weight was gone, girl!
Rosamund Pike showed off her post-baby body in a backless white gown with midriff cut-outs at the Golden Globe Awards on Jan. 11, 2015. Can you believe she welcomed baby No. 2 just a month earlier?
Doutzen Kroes flaunted her burgeoning baby bump in a skintight black dress on the red carpet at the Delete Blood Cancer Gala on May 7, 2014. Less than three months later, the Victoria's Secret Angel welcomed her second child, daughter Myllena Mae. You'll never believe what she did next…
Just four months after she welcomed her second child, Doutzen Kroes stripped down to walk the runway in her underwear at the 2014 Victoria's Secret Fashion Show. And that, ladies and gentlemen, is why she's a supermodel!
Kerry Washington cradled her baby bump while pregnant with her first child at the Vanity Fair Oscar Party in Los Angeles on March 2, 2014.
Within two months of welcoming her daughter Isabelle Asomugha into the world, Kerry Washington showed off her post-baby body at the BET Awards in June 2014.
While carrying son Otis Sudeikis in 2014, Olivia Wilde called her baby bump a badge of pride.
After giving birth to Otis Sudeikis in April 2014, Olivia Wilde was back on the event circuit within a few months. She's seen here in June 2014.
Duchess Kate has credited Pilates and swimming with helping her keep her figure while carrying her eldest child, Prince William. Even once she gave birth, it didn't take her long to drop the pregnancy pounds.
Within just a few months of giving birth to Prince George in July 2013, Duchess Kate stepped out looking super-slim.
Jennifer Love Hewitt is no stranger to criticism about her body. When she got pregnant with her daughter, Autumn, in 2013, she took a step away from the public eye and remained off the radar for the first four months after giving birth.
Just a few months after giving birth in November 2013, Jennifer Love Hewitt — seen here in April 2014 — looked great! But she didn't obsess over losing the last few pounds. "I've been doing Zumba, and I've worked it out so the baby's been doing Zumba with me," she said. "We dance together, and I carry her as a weight so we've been having fun that way." Aw!
While pregnant with her first child, Emily Blunt was spotted hiking the Hollywood Hills almost every day and attending Pilates classes. Healthy eating and regular exercise helped this mama get her groove back!
Two months after giving birth to daughter Hazel Krasinski, Emily Blunt was back in skinny jeans.