Kourtney Mary Kardashian is an apparel retailer and television personality. She is best known for her appearances on the reality show Keeping Up with the Kardashians.In 2005, Kardashian joined the cast of Filthy Rich: Cattle Drive, a reality show in which celebrities lived together in a small town in Colorado. She was portrayed as a stereotypical spoiled rich girl, but has indicated that the producers of the show contributed a large amount of money to charity. In 2007, Kardashian was invited to co-star in E!'s Keeping Up with the Kardashians, a reality show centering on the life of her sister Kim. Since the beginning of the series, she has become a significant character on the show and has developed her own fan base. She is known as "The Unassuming Firecracker" for her quiet but spontaneous personality.