2005–present: reality television
Kardashian first became known to reality television audiences on the 2005 series, Filthy Rich: Cattle Drive, on which she earned money for charity. She then became a cast member on Keeping Up with the Kardashians, which depicts the lives of her extended family. She and her sister Khloé starred in their own spinoff reality show, Kourtney and Khloé Take Miami, the first season of which documented their opening of the Miami D-A-S-H location in 2009. In January 2011, Kourtney and Kim Take New York premiered, which documents her and sister Kim opening their third D-A-S-H store in New York.
2007–present: retail ventures
Kourtney and her mother opened 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, Kardashian co-owns and operates D-A-S-H, a clothing boutique in Los Angeles, Miami, and New York City with sisters Kim and Khloé.
Kardashian has a number of endorsement deals along with her sisters Khloe and Kim. They are spokeswomen for the diet supplement Quick Trim, which is not FDA approved. She also represents the skincare line “PerfectSkin” with her sisters, which was developed by Dr. Ron DiSalvo for Perfect Science Labs.
The trio also released a jewelry line for Virgins, Saints, and Angels. The 20 piece collection debuted in March 2010. The jewelry is reflective of the Kardashians’ Armenian heritage.
In the spring of 2010, she and her sisters released a clothing line for Bebe.
In August 2010, Kardashian announced that she and her sisters will release another clothing line. The clothing line is called K-Dash and it will be sold on QVC. K-Dash will be released on September 10, 2010.
Kourtney Kardashian and her sisters created a sunless tanner called Kardashian Glamour Tan in 2010.
Kardashian has written the book “Kardashian Konfidential” with her sisters Kim and Khloe, which was released in November 2010.
Kardashian made her acting debut with a guest appearance on the ABC soap One Life to Live in the March 28, 2011 episode as attorney Kassandra Kavanaugh.