Kourtney Kardashian his murder trial. Kourtney first became known to reality-television audiences on the 2005 series, "", 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
Kylie Cosmetics where she teamed up with her half-sister, Khloe Kardashian. In April 2017, Kylie announced her collaboration with her half-sister, Kim Kardashian-West, called KKW X Kylie. Kylie Cosmetics partnered with Kim Kardashian-West soon after the KKW release. In May 2017, fans were hit with the news that Koko X Kylie would be returning for a Part 2 of the half-sisters’ collaboration. In April 2018, almost exactly a year after announcing her collaboration with Kim, Kylie announced her Kylie Cosmetics collaboration with her oldest half-sister, Kourtney Kardashian, called Kourt X Kylie. On May 9, 2018, Kylie and Kris Jenner announced their collaboration