Plot: Kourtney Kardashian Barker and Khloé Kardashian each take Vanity Fair's infamous lie detector test. Why won't Khloé let her daughter True sleep over Kourtney's house? Does Khloé ever judge what Kourtney posts on Instagram? Does Kourtney regret not inviting her famous siblings to her Las Vegas elopement with Travis Barker? Would Kourtney accept business advice from Jeff Bezos for her new Lemme Sleep gummies?