Watch: Rob Kardashian Reveals Why He Stepped Away From TV in Rare InterviewKourtney Kardashian is pooshing back the curtains on her family's dynamic. As her notoriously private brother Rob Kardashian made a rare appearance on The Kardashians, the Poosh founder detailed how she, Khloe Kardashian and Kim Kardashian each have a different type of relationship with the 38-year-old. "Him and Khloe are a little incestual," the eldest of Kris Jenner and the late Robert Kardashian Sr. joked during a confessional on the Oct. 30 episode of the Hulu series.