(Cover) - EN Showbiz - Khlo Kardashian has joked that her sister Kim's new engagement ring is a "fake".

The siblings star together with their other family members on hit reality show Keeping Up with the Kardashians, which follows their dramatic lifestyles.

Kim recently became engaged to basketball player Kris Humphries, who presented her with a huge 20.5 carat ring when he proposed.

"You can suck on it, like a lollipop," Khloe told PopEater of the jewel that she joked was "fake". She also laughed that the $2 million ring was really from a department store, adding it can be hard to tell the difference between the real deal and a copy.

"Kim's ring is from Nordstrom's $7.99 But no one knows if it's really real or fake these days, so why do we care?"

Kim's ring was designed by Kris and celebrity jewellery designer Lorraine Schwartz. "It's the most beautiful thing I have ever seen," Kim told People of her engagement ring. "It's perfect." (C) Cover Media