Kourtney Kardashian (born April 18, 1979) is an American television personality, socialite, businesswoman and model. In 2007, she and her family were picked to star in the reality television series Keeping Up with the Kardashians. Its success led to the creation of spin-offs including Kourtney and Khloé Take Miami and Kourtney and Kim Take New York.

With sisters Kim and Khloé, Kourtney is involved in the retail and fashion industries. They have launched several clothing collections and fragrances, and additionally released the book Kardashian Konfidential in 2010.

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Kourtney first became known to reality-television audiences on the 2005 series, Filthy Rich: Cattle Drive, on which she earned money for charity. In February 2007, a sex tape made by her sister Kim and former boyfriend Ray J in 2003 was leaked, which largely contributed to her rise to prominence. Later that year, Kourtney, in addition to her mother Kris; her stepfather Bruce (now known as Caitlyn);

her siblings Kim, Khloé, and Rob; and half-sisters Kendall and Kylie were commissioned to star in the reality television series Keeping Up with the Kardashians. The series proved successful for E!, the network on which it is broadcast, and lead to several spin-offs, including Kourtney and Khloé Take Miami, Khloé & Lamar, and Kourtney and Kim Take New York .

Kourtney and her mother opened children’s clothing boutiques called Smooch in the Los Angeles area and New York City; the boutiques carry the brand Crib Rock Couture. With sisters Kim and Khloe, Kardashian co-owns and operates D-A-S-H, a clothing boutique in Los Angeles, Miami, New York City, and a pop-up store in the Hamptons.

In the spring of 2010, Kourtney and her sisters released a clothing line for Bebe. In August 2010, Kourtney announced that she and her sisters were working on another clothing line called K-Dash, sold on QVC. Kardashian and her sisters created a sunless tanner called Kardashian Glamour Tan in 2010. Kardashian wrote the book Kardashian Konfidential with her sisters Khloe and Kim; it was released in November 2010.

In early 2010, the couple temporarily moved to Miami with their son and Kourtney’s sister Kim. During this time, Kourtney believed Disick had an alcohol problem. After regularly attending therapy and temporarily giving up alcohol, Disick and Kourtney reconciled and they continued their relationship in mid-2010.