Tracking the ages of the Kardashian-Jenner family gives you a clear window into how a Los Angeles legal dynasty transformed into a global multi-billion-dollar brand. People often mix up who came first, how many years separate the siblings, and how old they were when reality television first captured their lives.
The Kardashian sisters—Kourtney, Kim, and Khloé—alongside their half-sisters Kendall and Kylie Jenner, span nearly two decades of birth years. Kourtney is the eldest born in 1979, while Kylie is the youngest born in 1997. Understanding their exact age timeline reveals how different eras of media shaped their individual careers and public footprints.
The Exact Birthdates and Current Ages of the Sisters
To clear up any confusion, here is the chronological breakdown of the five sisters, ordered from oldest to youngest:
- Kourtney Kardashian: Born April 18, 1979. As the firstborn child of Kris Jenner and Robert Kardashian, she grew up in Beverly Hills long before reality TV fame.
- Kim Kardashian: Born October 21, 1980. She arrived roughly eighteen months after Kourtney, stepping into the role of the family's eventual media anchor.
- Khloé Kardashian: Born June 27, 1984. She is the youngest of the three original Kardashian sisters, completing the first trio of siblings.
- Kendall Jenner: Born November 3, 1995. As the first child of Kris and Caitlyn Jenner (formerly Bruce), she sits at the intersection of the Kardashian and Jenner households.
- Kylie Jenner: Born August 10, 1997. The youngest of all the siblings, she grew up almost entirely in front of television cameras.
Each sister's age dictates a distinct chapter in the family's collective history, from childhoods spent in upscale California enclaves to running international beauty and fashion empires.
Ages When Keeping Up With The Kardashians Premiered
When Keeping Up With The Kardashians debuted on E! in October 2007, the sisters were at drastically different stages of their lives and careers. This age gap heavily influenced their roles on screen during those early seasons.
- Kourtney was 28 years old, managing boutique stores like DASH and establishing her independent adult life.
- Kim was 26, turning her early work as a stylist and socialite into mainstream public recognition.
- Khloé was 23, acting as the sharp-witted younger sister who often challenged family dynamics.
- Kendall was just 11 years old, attending middle school and navigating pre-adolescence under a massive microscope.
- Kylie was only 9 years old, spending her formative elementary school years recording home videos for the show.
Seeing these ages puts the longevity of their brand into perspective. The younger siblings spent more than half of their childhoods documented for weekly broadcast television.
How Age Differences Shaped Their Business Ventures
The generational spread among the sisters allowed them to target entirely different consumer markets as they built their respective companies. Kourtney and Kim focused on early digital platforms, lifestyle blogging, and early e-commerce. By the time Kim launched SKIMS and various beauty lines, she drew on decades of pop-culture positioning.
Conversely, Kendall and Kylie hit adulthood just as Instagram and mobile-first social networking took over marketing. Kylie leveraged her massive digital following to launch Kylie Cosmetics as a teenager in 2015, capitalizing on a direct-to-consumer model that didn't exist when her older sisters were in their twenties. Kendall took a parallel path into high fashion, walking runways for major design houses worldwide by her late teens.
Common Misconceptions About the Family Timeline
Fans often confuse the birth order because of how the siblings cluster in media appearances and business collaborations.
- The Jenner vs. Kardashian divide: Many casual viewers forget that Kendall and Kylie share a father with each other, but have different parents than Kourtney, Kim, and Khloé. Kris Jenner is their mother, but Robert Kardashian Sr. is the father of the older three, while Caitlyn Jenner is the father of the younger two.
- Rob Kardashian's placement: Often lost in discussions about the sisters, Rob Kardashian was born on March 17, 1987, making him younger than Khloé and older than Kendall.
- Age gaps between sets: There is a notable six-year gap between Khloé (born 1984) and Kendall (born 1995), marking a distinct shift in family eras.
To explore more about their foundational background and family tree updates, you can read the comprehensive overview on Wikipedia's Kardashian Family Page or check historical profiles via Biography.
Frequently Asked Questions
Who is the oldest Kardashian sister?
Kourtney Kardashian is the eldest sister, born on April 18, 1979.
Who is the youngest among all five sisters?
Kylie Jenner is the youngest, born on August 10, 1997. She is roughly two years younger than her full sister, Kendall.
What is the age difference between Kourtney and Kylie?
There is an 18-year age difference between the oldest sister (Kourtney) and the youngest sister (Kylie).
Were Kendall and Kylie part of the original show's premise?
Yes, but as minor children. When the series started in 2007, Kendall was 11 and Kylie was 9, meaning they grew up entirely within the reality television ecosystem.
