Kris Jenner is reportedly fuming with Kanye West for commenting about his girlfriend Kim Kardashian's sex tape.

The reality star shot a home movie porno with ex-boyfriend Ray J that went viral in 2003.

Kim has since become a very successful fashion entrepreneur.

Kris is not happy with that part of Kim's past being discussed in public.

"Kris had stern words with Kanye when she saw that he said he would put Kim's sex tape on while romping with other women," a source told Radar Online.

"She thinks it's a disrespectful claim and told Kanye to stop talking about it at every given opportunity.

"As far as Kris is concerned, the video with Ray J is history and since then Kim has become a reality TV star, a fashion designer, even a philanthropist - so she's moved on."

Kim loves Kanye but she doesn't want to upset her mother.

"By bringing up the past, Kanye is making it worse for Kim, but he doesn't see it as that much of a big deal," the source explained.

"Kim is, however, caught in the middle. She wants her mom and Kanye to get along because she wants Kris to approve their marriage."