Kourtney Kardashian
Kourtney Mary Kardashian was born in Los Angeles, California on April 18, 1979, to parents Robert and Kris.  She is the oldest Kardashian sibling. She is the sister of Kim Kardashian and Khloé Kardashian. Her mother is Kris Jenner, her father was Robert Kardashian, and her former stepfather was Bruce Jenner (now Caitlyn Jenner).