“Kris Jenner, the mother to the famous Kardashian sisters and de facto CEO of the entire Kardashian empire is trying to explain the unexplainable: Why the Kardashians? Why are her daughters’ squabbles, shopping habits and appointments a national fascination?” msnbc website reports referring to Hollywood Reporter.

Why was Kim Kardashian the fourth-most-Googled person last year after Justin Bieber, Katy Perry and Selena Gomez?

“Since their arrival on E! in 2007, the famous family has ably defied the laws of 15-minute reality TV fame while making a profitable empire. According to a source close to the family, as the cameras keep rolling on the eight-member family’s life, the Kardashians have cashed in, earning more money last year than what Angelina Jolie, Sandra Bullock and Tom Cruise are estimated to have earned together: a total of $65 million,” the source says.

“Kris Jenner earned money from a modern business model, consisting of three commercial components: fan interaction via social networks (Kardashinas have a total of 13 million Twitter followers), brand endorsements and a successful reality show (Season 5 of E!’s “Keeping Up With the Kardashians” with 3.5 million viewers a week),” the source says.