You’d think after twenty years of watching them on our screens, we’d have the timeline down. But honestly? The math gets fuzzy. Between the high-glam filtered Instagram posts and the fact that they all seem to age in reverse thanks to some world-class skincare (and, you know, everything else), keeping track of the kardashian sisters ages from oldest to youngest is a bit of a moving target.
It's 2026. Things have changed. The "kids" aren't kids anymore. Kylie is nearly thirty, which feels like a personal attack on anyone who remembers her as the literal child running around the background of early KUWTK seasons.
If you're trying to figure out who is the "mother" of the group or why Kendall and Kylie always feel like they’re in a different league entirely, it all comes down to the gap between the Robert Kardashian era and the Caitlyn Jenner years. Here is the actual breakdown of the most famous sisters in the world as they stand right now.
Kourtney Kardashian Barker: The 46-Year-Old "OG"
Born on April 18, 1979, Kourtney is the undisputed matriarch of the sibling group. She’s 46. It’s wild to think she was already in her late 20s when the family first became a household name.
While she’s the oldest, she’s often the one most detached from the "hustle" culture that her sisters—looking at you, Kim—live for. Since marrying Travis Barker and welcoming their son Rocky in late 2023, her vibe has shifted significantly. She’s leaning into the "Lemme" lifestyle and the "Rocky" mom era.
She was the first to graduate college (University of Arizona, by the way), the first to have kids, and the first to basically say she was done with the cameras. Yet, here she is, still the anchor of the family tree.
Kim Kardashian: The 45-Year-Old Mogul
Kimberly Noel Kardashian. Born October 21, 1980. She’s 45.
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There is a weird misconception that Kim is the oldest because she’s the face of the brand. She isn't. She’s the second-born, trailing Kourtney by about 18 months. That 1980 birth year is significant—it means she’s a true Gen X/Millennial "cusper" who saw the world before the internet and then proceeded to break it.
Kim is currently in a space where her age seems to be a fuel source. Between running SKIMS, her law studies, and managing four kids, she doesn't really "do" mid-life crises. She just rebrands.
Khloé Kardashian: The 41-Year-Old Transformation Queen
Khloé was born June 27, 1984. She’s 41.
For years, Khloé was the "younger sister" of the main trio, often the one getting the brunt of the media's harsh comparisons. That’s changed. Now, she’s the fitness-obsessed, "Good American" founder who seems to have the most grounded (if chaotic) personal life in Hidden Hills.
The gap between Kim and Khloé is about four years. It’s enough that they grew up together, but Khloé always had that distinct "younger sibling" energy until recently. Now, as a mom of two (True and Tatum), she’s essentially the glue that keeps the cousins together.
Kendall Jenner: The 30-Year-Old Supermodel
Wait. Kendall is 30? Yeah, that’s the part that usually trips people up.
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Born November 3, 1995, Kendall Nicole Jenner has officially hit the big 3-0. She’s the first of the "Jenner" era, born after Kris and Caitlyn (then Bruce) Jenner tied the knot.
There is a massive 11-year gap between Kourtney and Kendall. That’s why the dynamics always feel split. Kendall grew up in a completely different world than the older three. While Kourtney and Kim were trying to make "DASH" a thing in their late 20s, Kendall was already a global supermodel at 19.
She’s always been the "quiet" one. The one who drinks 818 Tequila and stays out of the messy relationship drama that plagues her sisters.
Kylie Jenner: The 28-Year-Old "Baby"
The youngest. Always the youngest. Kylie Kristen Jenner was born August 10, 1997. She is 28.
If you want to feel old, just remember that Kylie was nine years old when the first episode of their show aired. Nine. She has quite literally never known a life without a camera in her face.
The kardashian sisters ages from oldest to youngest list ends with a woman who has already been a billionaire (on paper, anyway), a mother of two, and a beauty mogul before she even hit 25.
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Kylie and Kendall are close—only two years apart—which is why they were always packaged as a duo. But Kylie’s life trajectory has been much faster. At 28, she’s often seen as more "mature" or at least more settled than Kendall, simply because of her kids, Stormi and Aire.
Why the Age Gaps Matter for the Brand
The spread from 1979 to 1997 is a 18-year span. This isn't just a fun fact; it's the secret to their longevity.
- Broad Demographic Reach: Kourtney and Kim appeal to the 40+ crowd who value wellness and business.
- The Millennial Bridge: Khloé hits the 30-40 demographic perfectly.
- Gen Z Dominance: Kendall and Kylie own the 20-somethings.
Most reality families fizzle out because the audience grows up and moves on. The Kardashians avoided this by having a "new" set of sisters (the Jenners) ready to take the baton just as the older sisters were becoming "establishment."
Identifying the Sisters by Birth Year
If you need a quick cheat sheet for the kardashian sisters ages from oldest to youngest, here it is without the fluff:
- Kourtney Kardashian (1979): 46 years old.
- Kim Kardashian (1980): 45 years old.
- Khloé Kardashian (1984): 41 years old.
- Kendall Jenner (1995): 30 years old.
- Kylie Jenner (1997): 28 years old.
(And yes, Rob Kardashian exists too. He was born in 1987, making him 38, sitting right between Khloé and Kendall. But since we're focusing on the sisters who drive the billion-dollar machine, he’s often the "forgotten" middle child.)
The family has successfully transitioned from "famous for being famous" to legitimate industry titans. As they move into 2026, the focus has shifted from their ages to their legacies. Whether you love them or find them exhausting, you can't deny the staying power.
To stay updated on the family’s latest ventures, you can follow their individual brand launches—like Kim’s Skky Partners or Kourtney’s Lemme—to see how they are pivotally navigating their 30s, 40s, and beyond. Focus on their official social media channels for real-time updates, as the "official" ages only tell half the story of their current career phases.