WATCH: Khloé Kardashian Makes Kourtney Reveal Family Secrets on ‘Ellen’

The sister who complains the most is…Kim?

“Duh! It’s so Kim!”

Khloé Kardashian takes over hosting duties of the Wednesday (June 8) episode of the Ellen Degeneres Show, and FaceTimes her older sis Kourtney to get some family secrets out of her.

She asks her questions like who’s the messiest Kardashian (hint: Kylie Jenner), the biggest troublemaker, the sister who gives the best presents, the best babysitter, the worst babysitter (hint: Kendall Jenner), the funniest and more.

Earlier in the show, Kardashian and Ellen Degeneres ran through the most memorable moments from Keeping Up with the Kardashians, plus bring back the lesser-known sister Karla Kardashian.