Kim K's ex to auction off engagement ring

Kim Kardashian's ex-husband is reportedly auctioning off her 20-carat diamond engagement ring.

Basketball player Kris Humphries - who infamously split from the 'Keeping Up with the Kardashians' star after just 72 days of marriage in October 2011 - has listed the lavish jewellery for sale at Christie's auction house in New York City, where it is expected to be sold on October 15.