Kim Kardashian and Kylie Jenner in Bathing Suits Say "You My Twin" 

Kim Kardashian and Kylie Jenner are twinning in their swimsuit. The sisters show off their famous curves in one of their latest social media posts, seductively posing in front of a pool in matching bathing suits. “You my twin,” Kylie captioned the post shared to her 380 million followers. “Always and forever,” responded her old sister. How does she stay so fit? Read on to see 5 ways that Kim Kardashian and 5 ways that Kylie Jenner stays in shape and the photos that prove they work—and to get beach-ready yourself, don't miss these essential 30 Best-Ever Celebrity Bathing Suit Photos!

1. Kim Goes on Drastic Diets

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Kardashian isn’t afraid of going on drastic diets to lose weight fast. To squeeze into Marilyn Monroe’s famous dress for the 2022 Met Gala she dropped 15 pounds in just three weeks by cutting all carbs and sugar out of her diet and drank a lot of water. “Two weeks before [the Met Gala], I was 10 pounds down and I was so proud of myself,” she said. “Then I got down 15 [pounds] and it fit. I couldn’t believe it.” She claims that the diet was safe. “If I was starving and doing it really unhealthy, I would say that, of course, that’s not a good message. But I had a nutritionist, I had a trainer. I have never drunk more water in my life. I don’t see the criticism for other people when they lost weight for roles — they are [considered] geniuses for their craft,” she told Allure. “There are so many things out there that are so not accurate and not true.”

2. Kylie Likes Working Out at Home

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Kylie prefers at-home workouts. "I never find myself in a gym. I find myself on the floor of my bedroom, looking up on like, Google or Pinterest, workouts — and doing abs, lunges, squats. All that good stuff," Kylie revealed during an interview with Harper’s Bazaar. According to the star, she works out every day, sometimes twice.

3. Kim Works Out Like It’s Her Job

Kim doesn’t mess around when it comes to fitness. She trains with bodybuilder Melissa Alcantara, who dished on the details of their sessions to Women’s Health. “Her schedule is crazy, and mine is also crazy, so we work out really early in the morning at 6 a.m,” she said, adding that "85 per cent of our training is weight training, and the other 15 is made up of cardio" and that Kim works out six days per week for 60-90 minutes each time. Ball slams, burpees, sprints, and ladder drills to get her heart rate up are just a few of their exercises. "She’s super responsible, she never cancels – she’s the best client and athlete you can have," Alcantara shared. "It’s just her drive. She's like, ‘I have to work out, this is part of my life.' It’s all about the mindset."

4. Kylie Mixes Up Her Meals

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Kylie maintains variety with every meal but breakfast. “Lately every morning I've been eating the same thing," Jenner said, revealing that she was obsessed with eggs, avocado, and turkey bacon. "A typical lunch for me — I can't eat the same thing every day — but I do love lemon chicken with vegetables," she added to Harper's Bazaar. "Sometimes, I'll make myself some tacos," she continued. "Today, at the shoot, I ordered a steak burrito and some rice, some enchiladas. I was feeling Mexican food vibes today. It really just depends." She also loves peach tea, bone broth, raw celery juice, and a vanilla iced latte with oat milk for breakfast.

5. Kim Wears Sauna Suits

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To get into Met Gala shape, Kim took an extra step with her cardio. “I would wear a sauna suit twice a day [and also] run on the treadmill,” she told Vogue.

6. Kylie Does a Lot of Cardio

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On the workout tab of Kylie’s Instagram page you can tell that the reality star does a lot of cardio to stay in shape. Not only does she walk and run on the treadmill, but also climbs on a stair climber. Her runs are no joke. She claims that she spends 30 minutes every day on the machine at a 12 include and 3.2 speed and then jogs at the end for as long as she can.

7. Kim Does LISS Workouts

Kim is a big fan of LISS workouts. "Two days out of the week we’ll do steady-state cardio," Alcantara explained to WH, "so just walking at a steady pace on the treadmill for usually around 20 minutes. Nothing getting the heart rate too high."

8. Kylie Does Pilates

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On her Instagram workout tab, Kylie reveals that she is a fan of doing pilates on a reformer. According to research, Pilates exercises are designed to increase muscle strength, endurance, and flexibility, and to improve posture and balance. Experts maintain that it is a great workout for leaning out.

9. Kim Eats Real Food…and Lots of Plants

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Kim maintains a clean diet filled with lots of plants. "I want her to eat real food that’s cooked every day," Alcantara told People. "Most likely if it comes out of a box, it’s not going to be good for you." "Plant based and two workouts a day for 30 days to get our mind and body right this year!" Kim added in a January 2021 Instagram post.

10. Kylie Wears a Waist Trainer

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Kylie claims that one of the secrets to her tiny waist is wearing a waist trainer while she is working out. Sports Research, the brand who makes one of the waist trimmers she wears, claims that the workout aide will “help you get the most out of your next cardio, circuit or high-intensity interval training session.” In a 2015 Instagram post she revealed why she is a fan. “I love a little extra help… I’m officially obsessed with after seeing how bomb my sisters look. It also helps with my posture,” she said.

Happy birthday, Kourtney Kardashian! Her younger sister, Kim, celebrated the special day yesterday by sharing a photo of the duo rocking matching blue swimsuits while taking a dip in the ocean. “Each year around the sun with you I learn and grow and evolve more because of you! Thank you for teaching me to always go for it and follow my heart even if no one else understands. They just aren’t on our growth path lol Happy Birthday @kourtneykardash! Happiness looks so good on you. I love you so much!!!” she captioned the series of snaps. How do the sisters maintain their famous figures? Read on to see 8 of Kourtney Kardashian and Kim Kardashian’s top stay-fit secrets and the photos that prove they work—and to get beach-ready yourself, don't miss these essential 30 Best-Ever Celebrity Bathing Suit Photos!

1. Kim Lifts Weights

Kim achieved her best body ever with the help of bodybuilder Melissa Alcantara. "I’ve been working out really hardcore with a bodybuilder for one year. September is our one-year anniversary,” Kim revealed to E! News in 2018, via People. Kim lifts “heavy weights,” per her trainer who told Women’s Health that 85% of their training is done with weights and the other 15% is cardio.

2. Kourtney Exercises Daily

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Kourtney tries to move every single day. "I think I take time for myself to work out every day, which I never did—especially having three young kids," she told E! News. "I just never made it a priority, and now it just makes me feel so much better—mentally and physically." She does a variety of workouts including strength training, jump roping, running, lifting weights, stairmaster cardio, Pilates, and floor exercises. (For her website’s advice on how to burn fat in 15 minutes, go here.)

3. Kim Works Out Even When She Doesn’t Feel Like It

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Kim has a no-excuses policy when it comes to exerise. "Just like anybody else, there are days where Kim's not really feeling it, but she will do it," her trainer told People in 2020. "Then there are a lot of days when she's killing it! She never questions the stuff that I make her do, she's just like, 'Okay,' and I love that."

4. Kourtney Has Workout Buddies

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Kourtney relies on workout buddies to keep her accountable, including friends like Sarah Howard and her sister, Khloe. “I know for my body, I need four to five days a week of working out. Khloe and I really push each other to do that,” she told E!

5. Kim Fuels Up For Exercise

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Kim doesn’t starve herself thin. In fact, she eats to fuel her workouts. "My trainer Mel always says that before and after you train, you should eat simple carbs, like sweet potatoes, and small amounts of fat and protein, like chicken. You should also have veggies with your meals, since you need them to help effectively break down and absorb your protein, fat, and carbs,” she wrote on her app in 2018, according to Harper's Bazaar.

6. Kourtney Takes Supplements

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Kourtney is a big fan of supplements. "Every morning, when I wake up, I take collagen supplements on an empty stomach," Kourtney dished on Poosh. She starts her day with water mixed with one tablespoon of organic apple cider vinegar. "Both of these habits have a ton of health benefits that affect everything from your skin to the way your body processes nutrients," she said. She also drinks a vegan probiotic shot, and then avocado pudding with the fruit and E3Live blue-green algae, bone broth protein powder, and MCT oil. "It only takes a few minutes to make and it provides healthy fats to give me energy before a workout,” she says about her routine.

7. Kim Eats Lots of Plants

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Kim famously followed the Atkins diet, but has been gravitating toward plant-based living for the past few years. "My 40s are about being Team Me. I'm going to eat well,” she told Vogue. "Plant based and two workouts a day for 30 days to get our mind and body right this year!" she wrote in a January 2021 Instagram post.

8. Kourtney Celebrates Her Curves

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Kourtney, who recently gained weight during IVF treatments, as the medication she was given put her into menopause, has major self-love whether she is at her thinnest or curviest. "I'm a woman with a BODY,” she wrote in response to a user asking if she was expecting when she had gained a little weight. “This is me when I have a few extra pounds on, and I actually love it,” shesaid to a follower during another body shaming incident. “I have given birth three amazing times and this is the shape of my body.”