kris jenner has had sex on a plane.

The 57-year-old star admitted during a game of 'I have never' on her new talk show 'Kris' that she and her husband Bruce Jenner - who have daughters, Kendall, 17, and Kylie, 15, together - are part of the Mile High Club after getting frisky with one another on an American Airlines flight.

She said: ''We decided intentionally to join the Mile High Club.

''We thought we were so sneaky ... so we come back to our seats and we were like two Cheshire Cats - we thought we got away with something.''

However, once the pair - who have been married for 22 years - had landed, the airline made the public announcement that they had in fact been caught out.

Kris explained: ''The guy picks up the PA and says, 'Thank you for flying with American, ladies and gentleman, and we would just like to give a big congratulations to Kris and Bruce Jenner ... for joining the Mile High Club!''

Kris made the racy confession in front of her daughter Khloe Kardashian - who was co-hosting - and Kendall and Kylie who were in the audience.