three older sisters,  Kourtney ,  Kim , and  Khloé Kardashian . His parents divorced, and his mother married  Bruce Jenner  in 1991. He has two younger half-sisters,  Kendall  and  Kylie Jenner , and four older step-siblings, Burton, Casey, Brandon, and  Brody Jenner . His father, attorney  Robert Kardashian , passed away in 2003