Khloe Kardashian took over presenting duties for Wednesday's episode of The Ellen DeGeneres Show and admits she was terrified of taking the reins in front of a live audience for the first time. During the show, Khloe arranged a FaceTime call with her older sister, Kourtney Kardashian, and played "Fill in the blank." While Kourtney called Khloe the best babysitter, she described Kendall Jenner as "the worst" because "she doesn't babysit.