Kourtney Kardashian Is 42 — and Hotter Than Ever! See Her Body Evolution

Kourtney Kardashian turns 42 years old on April 18, 2021, and though she’s always been fit, her body somehow looks better and better every day.

As anyone who keeps up with Keeping Up With the Kardashians knows, the eldest of the Kardashian-Jenner crew is the family leader when it comes to all things nutrition, health and wellness. Us even tried to track every diet the Poosh founder has ever recommended. (Spoiler alert: from intermittent fasting to no-sugar and gluten-free to apple cider vinegar shots, it was a lot!)

While Kim Kardashian may get attention for her ample butt and tiny waist and Khloé Kardashian for her dedication to weight loss and maintenance, Kourt has focused on making sure her entire body is fit and healthy inside and out since getting pregnant with son Mason in 2009. (She also has daughter Penelope and son Reign with former love Scott Disick.)

Gone are the 5-foot-1 star’s partying and club days! As she’s gotten older, Kourtney has focused on consuming fresh, organic, whole foods and ditching booze. “She’s really good with food,” a source told Us in October 2018. “She doesn’t drink a lot of alcohol, but will occasionally when she is out.” And everything she consumes is planned. “She plots her meals she has for the day,” said the source. “She brings snacks wherever she goes — all gluten-free. She doesn’t snack too much though.”

With age also comes wisdom. If the entrepreneur falls off track, “she’ll step up her workouts, but won’t go on any fad diet like keto,” the source shared. That technique pays off. See: Her sexy nude photoshoot for GQ Mexico’s December 2018 issue.

As for those workouts that she powers through, her commitment is off the charts! “Kourtney works her butt off,” the source told Us of the reality star’s fitness regimen. “Wherever she is, she makes sure to exercise every morning. She does a mix of cardio and strength training. She is still working with [trainer] Don-A-Matrix when she is home, and has a routine of exercises she does when she is on the road.”

Without a doubt, her impressive efforts have paid off! Scroll through to see photos of Kourtney from 2002 to present day — and pick up a healthy habit or body-positive tip of your own!

March 2021

“How’s your Aspen?” Kardashian captioned the photo via Instagram of her rocking a bikini in the snowy Colorado mountains in March 2021.

Courtesy of Kourtney Kardashian/Instagram

February 2021

“Since I wasn’t invited to the sister shoot …” the reality star joked in February 2021 while sharing a snap of her looking stunning in her sister Kim Kardashian’s SKIMS intimates set. 

Courtesy of Kourtney Kardashian/Instagram

January 2021

The Keeping Up With the Kardashians star showed off her outfit in a sultry photo via Instagram in January 2021.

Courtesy of Kourtney Kardashian/Instagram

November 2020

The Poosh founder flaunted her figure in a matching lilac crop top and bottoms in November 2020.

Earlier in the year Kardashian reflected on her long journey to loving her body, saying in a YouTube video, “This is the shape of my body. I gained a few pounds over this quarantine time, and I love my body and I’m proud of my shape and I’m obviously posting it and this is the shape of my body.

“I don’t think I look pregnant at all,” she added at the time. “We’re all shaped differently and that’s my body and I’m proud of it, so that’s how I respond to the negative comments. It’s not always easy.”

Courtesy of Kourtney Kardashian/Instagram

September 2020

Kardashian shared a series of photos via Instagram in September 2020, of herself and TikTok star Addison Rae lounging in the pool. “Two more days of summer,” she captioned the post.

In July 2020, Rae told Us that hanging out with the Kardashian family taught her to be “thankful” for her success. “The advice I have gotten from hanging around people who have spent time in the spotlight is to always be humble and grateful for all that I am given because I am in a really fortunate position,” she said. “I’m truly thankful for the platform my followers have given me.”

Courtesy of Kourtney Kardashian/Instagram

August 2020

“Lake ya,” the reality star captioned a sexy Instagram snap in a a silver one-piece swimsuit from a family vacation in August 2020.

In the comments section, Disick replied, “What a lake er.”

Courtesy of Kourtney Kardashian/Instagram

April 2020

Kourtney seemed to be in the best shape of her life on the cover of Health magazine in April 2020. “I grew up in that super-skinny era. ‘Fat-free’ and calorie counting was the thing. I don’t even think about those things anymore,” she said in an interview, noting that her household is “gluten- and dairy-free.”

March 2020

The clean-living advocate shared sexy snaps from her disposable camera on Instagram on March 24 during a trip to Palm Springs, California.

Courtesy of Kourtney Kardashian/Instagram

January 2020

Kourtney looked svelte in an orange bikini while aboard a yacht in Italy in a January 15 Instagram upload.


August 2019

Fans applauded the reality star for not editing her stretch marks in a photo posted on the Poosh Instagram account on August 12. “I never cared about them — I like them!” she later told Health magazine.

Courtesy of Poosh/Instagram

July 2019

After going back on the keto diet, Kourtney showed off the results in a bikini on vacation in Italy on July 30.

Courtesy Kourtney Kardashian/Instagram

June 2019

The Poosh founder announced on her website that she was going back on the keto diet two years after first trying it. “I’m really excited to be jumping back in and have committed to keto as my summer kick-start,” she wrote. “I know after the month is up, I will most likely go back to my regular lifestyle, especially during summer with my kids. It’s all about balance.”

Poosh/Katie Levine/MEGA

February 2019

White hot! Kourtney makes her pantsuit sexy by wearing it sans shirt in NYC on February 7. “Women have become more strong and powerful,” she told GQ Mexico in 2018. “This movement about celebrating our bodies has helped us love ourselves as we are, instead of trying to be something different.”

Raymond Hall/GC Images

December 2018

“I think it’s important to expose positive images of our body,” she told GQ Mexico in her cover story. Added the confident star, “I am very comfortable in my own skin. I like to be naked in my house.”

Michael Schwarts/GQ Mexico for its December Edition

September 2018

The Poosh founder sizzled in a September 7 Instagram mirror selfie that she simply captioned: “cat in the hat.” As for the diet that keeps her slim, “I try to do everything in moderation in my usual routine,” she’s said. “But when I go out or have a craving, I’ll have whatever I want.”

Courtesy of Kourtney Kardashian/Instagram

June 2018

On June 4, Kourtney dazzled in Brooklyn, NY. Of her priorities, she’s said, “Being a mother to me is the most important thing because it’s what’s in my heart.” But fitness is a close second. “Then I would say exercising… Not only for my body, but because it does my mind a lot of good.” 

James Devaney/GC Images

October 2017

The mom of three showed off her amazing physique at the October 25 launch of PrettyLittleThing by Kourtney Kardashian in L.A. That year, as Kourt later told fans, she had practiced intermittent fasting “for 2-3 months.” As she explained of her method, “For me, this meant not eating for 14 to 16 hours after dinner. I wouldn’t eat past 7 p.m. at night, and then I would wait to eat breakfast the next day until after my morning workout, which would be around 10:30 a.m.–11 a.m.”

Rich Fury/Getty Images

June 2016

In London on June 8, Kourtney’s off-the-shoulder crop top and high-waisted pants highlighted her enviable figure.

Luca Teuchmann/WireImage

October 2015

As her gym outfit and killer abs revealed on October 21, all the baby weight — and then some — was gone 10 months after welcoming her third baby, Reign.

Bauer-Griffin/GC Images

August 2014

“I try to eat pretty healthy, but I think it’s fun and important to listen to your cravings,” Kourtney (here, pregnant with her third baby on August 9 in Bridgehampton, NY) told Natural Health after welcoming Reign. “I develop a thing for Nilla Wafer cookies every time. I have no idea why!”

Paul Zimmerman/Getty Images for Women's Health

April 2013

To lose the baby weight she’d gained with Penelope, the star (in NYC on April 22) told Us that she and Kim, who were filming Kourtney & Kim Take Miami at the time, motivated each other to work out harder and eat better. “I’ll be like, ‘OK, Kim, I made a hot water with lemon, and we’re going to sip on this while we’re doing our buying for Dash,’ or whatever it is that we’re doing,” she told Us. “Just little things instead of sitting in the kitchen eating cookies.”

Gilbert Carrasquillo/FilmMagic

May 2012

Kourtney (pregnant with her second baby in L.A. on May 16) told Us that same year, “I don’t eat leftovers, we don’t freeze any meat in our house, we keep everything really fresh, and I don’t reheat things because bacteria can grow on it. I try to eat as fresh, organic and healthy as possible.” 

Bauer-Griffin/GC Images

August 2011

The star (in Hollywood on August 17) has admitted that her famous family wasn’t into it when she first started adopting her healthy and organic habits. “I pick apart everyone’s pantries,” she said. “They think I’m super annoying.” 

Jason LaVeris/Getty Images

July 2010

In 2010, Kourtney (in Miami Beach on July 16), was still a spokesperson for QuickTrim. “I’ve been doing this shake called Satisfy QuickTrim,” she told Us that year of how she lost the baby weight with Mason. “It’s like you replace one meal a day with it, and it’s safe for breastfeeding. So that’s been helping too.”

Andrew H. Walker/Getty Images

September 2009

Kourtney (here, at the Emmys on September 20) has revealed that pregnancy was what first made her pay attention to eating clean. “I was not raised this way — people just weren’t as aware of healthy eating as they are today. When I got home from school, my snack was a bag of chips or cookies, and as an adult, I didn’t even know what organic meant — I’d just go to the market and buy the same things my mom bought,” she’s told Natural Health. “I didn’t really have any thoughts about it before I had my kids.”

Frazer Harrison/Getty Images

November 2008

A 29-year-old Kourt displayed her belly button ring in a black bikini and sarong in Miami Beach on November 14.

Troy Rizzo/Getty Images

July 2008

The rising star attended the ESPY Awards in L.A. on July 16 in a ruched dress. 

ANDREAS BRANCH/Patrick McMullan via Getty Images

October 2007

Kourtney had a night out on the town in L.A. with Khloé on October 7 — just one week before the family’s E! show premiered. The sisters, each clutching a Blackberry, were called “socialites” in the caption. 

Chris Wolf/FilmMagic

September 2002

Five years before the premiere of Keeping Up With the Kardashians, a 23-year-old Kourtney attended a fashion show afterparty in L.A. 

Michael Caulfield/WireImage

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