Kourtney Kardashian was born on April 18, 1979 in Los Angeles and is the oldest child of attorney Robert Kardashian and Kris Jenner and is the sister of Kim Kardashian, Khloé, and sister of Rob Kardashian. She is of Armenian descent and Dutch-Scottish American descent. Robert Kardashian, best known for being O. J. Simpson’s lawyer during his murder trial, died on September 30, 2003. Her mother divorced Robert Kardashian in 1989 and married former Olympian Bruce Jenner in 1991.

Kourtney attended the Roman Catholic all-girls school Marymount High School. Following graduation, she left California to move to Dallas where she attended Southern Methodist University for two years. She then moved to Tucson, Arizona, and attended the University of Arizona, graduating with a degree in Theatre Arts and a minor in Spanish. Her classmates included Nicole Richie and Luke Walton.

Kourtney became the stepsister of three stepbrothers, Burt Jenner, Brandon Jenner and Brody Jenner, and Casey Jenner, after her mother Kris married Bruce Jenner. She also has two half-sisters, Kendall and Kylie Jenner.

Kourtney and her mother opened up children’s clothing boutiques in both the Los Angeles area and New York City, called “Smooch”, which carries the brand “Crib Rock Couture”. As seen on Keeping Up with the Kardashians, Kourtney co-owns and operates D-A-S-H, a clothing boutique in Los Angeles and Miami, with sisters Kim and Khloé. She and Khloé starred in their own reality show, Kourtney and Khloé Take Miami which highlighted their single lives in a new city and their opening of D-A-S-H in Miami. Kourtney also starred in reality show, “Filthy Rich: Cattle Drive” to earn money for charity.

Kourtney has a son, Mason Dash Disick, born December 14, 2009 who weighed in at 7lbs 6oz. with her boyfriend Scott Disick.