Khloe Kardashian was "f***ing someone in their 20s" when she was just 16 years old.

Khloe Kardashian in Complex magazine

Khloe Kardashian in Complex magazine

The 'Keeping Up with the Kardashians' star doesn't think it is fair that her younger half-sister, 17-year-old Kylie Jenner, has been criticised for dating 25-year-old musician Tyga because the teenager's life is so different to that of most people her age.

Asked if she thinks the criticisms of the couple are fair, she said: "I think at 16 I was probably f***ing someone that was in their 20s, for sure. I wouldn't say I was even dating, probably just sleeping with them.

"But again Kylie is not a normal 17 year old. You're not gonna say, 'Hey, so what are you doing this weekend?' and have her say, 'Having a slumber party at my girlfriend's,' or 'Going to prom.'

"That's not what Kylie does. Kylie is taking business meetings and bought her first house, or she's going on a private plane with Karl Lagerfeld to take a meeting.

"That's not even what people do in their 30s. It's a rare circumstance, so let's treat this as a special case."

The 31-year-old reality star has previously been embroiled in a war of words with Amber Rose over the model's remarks towards Kylie but Khloe insists she wasn't "s**t shaming" her rival - because she used to be "sl*tty" herself.

She told Complex magazine: "I just feel like it was unnecessary for her to say anything, and I used her own quote back.

"It was from her talking about when she became a stripper so I'm like,'"How are you judging and saying Kylie should have a curfew?' What I thought was crazy was she was telling my sister to act a certain way or have a curfew, but [she wasn't] doing the same. So just don't comment.

"How was I sl*t-shaming by saying don't throw stones at glass houses? There was no sl*t-shaming. I am not one to sl*t-shame, I have done sl*tty behaviour myself."