Sanford Siegal, the creator of the Cookie Diet, sued Kardashian, claiming she defamed him on Twitter.
According to Siegal, Kardashian tweeted in October 2009 that he was "falsely promoting" that she was on the cookie diet.
She has released a variety of products tied to her name, including the successful 2014 mobile game Kim Kardashian: Hollywood, a variety of clothing and products, and the 2015 photo book Selfish.
Her relationship with rapper Kanye West has also received significant media coverage; the couple married in 2014 and they have two children together.
With sisters Kourtney and Khloé, Kardashian is involved in the retail and fashion industries.