Kourtney Kardashian - Bikini candids in Miami 1-14-11

Kourtney Mary Kardashian (born on April 18, 1979) is an American entrepreneur, heiress, socialite, model, and reality television personality who gained fame as a cast member of Filthy Rich: Cattle Drive, Keeping Up with the Kardashians and Kourtney and Khloé Take Miami.

She is the oldest child of Kris Jenner and defense attorney Robert Kardashian, the sister of socialite Kim Kardashian, Rob Kardashian, and Khloé Kardashian.