<P> Kourtney Mary Kardashian was born in Los Angeles , California on April 18 , 1979 to Robert and Kris . She has two younger sisters , Kim and Khloé , and a younger brother , Robert ( Rob ) . In 1991 , her parents got divorced and her mother married Bruce Jenner , a 1976 Summer Olympics decathlon winner ( Jenner later changed her name to Caitlyn ) in 1991 . Through their marriage , Kardashian gained stepbrothers Burton `` Burt '' , Brandon , and Brody ; stepsister Casey ; and half - sisters Kendall and Kylie . </P>
<P> Kourtney Mary Kardashian was born in Los Angeles , California on April 18 , 1979 to Robert and Kris . She has two younger sisters , Kim and Khloé , and a younger brother , Robert ( Rob ) . In 1991 , her parents got divorced and her mother married Bruce Jenner , a 1976 Summer Olympics decathlon winner ( Jenner later changed her name to Caitlyn ) in 1991 . Through their marriage , Kardashian gained stepbrothers Burton `` Burt '' , Brandon , and Brody ; stepsister Casey ; and half - sisters Kendall and Kylie . </P>
who is the first born of the kardashians
who is the first born of the kardashians
Kourtney Mary Kardashian
Kourtney Mary Kardashian