While Kendall and matriarch Kris Jenner (along with their usual co-conspirator E!) are the masterminds behind the new show and definitely involved in filming, Kim, Kourtney, and Khloé's involvement is less clear. While they do appear in the Kirby Jenner, it's hard to tell if they're actually there with the titular star, or if the same trickery used for his Instagram has now been applied to TV. Are these old shots of KUWTK chopped up with footage of Kirby? Did the Kardashians film separately from Kirby, and that's why it never quite seems like they're really in conversation? Or are the sisters far better actors than I ever knew and are convincingly playing the roles of siblings who do not give a flip about their secret brother?