Demi Moore jealous of Kim Kardashian?

"Kutcher is a huge fan of 'Keeping Up with the Kardashians'. But Moore says she can't even bear to watch. Despite being married for more than four years, Moore still grapples with insecurities over her and Kutcher's 15-year age difference. And Kardashian flirts like crazy with Kutcher, which drives Moore nuts," said a source.

According to imdb.com, Moore last month took a swipe at Kardashian on Twitter, a spat that apparently started because of Kutcher's burgeoning friendship with Kardashian.