When Keeping Up with the Kardashians first aired on E! back in 2017, it mostly had a heavy focus on the three main Kardashian sisters; Kim, Kourtney, and Khloe. The show proved to be the thing that launched the family into the A-List spotlight, landing them important appearances, jobs, and other likewise ideas. At the time of the show's premiere, the younger Jenner sisters, Kris and Bruce Jenner's direct children, were only 9 and 11 years old. 9 year Kylie and 11 year old Kendall took the cameras like fish in water.