Kourtney Kardashian says social media users "hate" Kim Kardashian West for her insulting comments on 'Keeping Up with the Kardashians'.

Kourtney Kardashian

Kourtney Kardashian

The 38-year-old reality star argued that Kourtney, 39, was the "least exciting to look at" of her sisters, and in a teaser clip from an upcoming episode of the show, Kourtney is seen reacting to the online backlash against Kim.

Speaking to Kim and her ex-boyfriend Scott Disick, Kourtney quips: "Oh my god, people are going so crazy. People hate Kim from her comment on the show."

Kim - who is married to rapper Kanye West - subsequently tried to clarify her offensive remarks.

The American star explained: "We got into a fight. I said, 'You're the least exciting to look at.'

"What I meant is you're the most boring. People think that is like I said, 'Kill your mom.'"

In the clip, Kourtney insists they should not seek to "justify" their spat.

But Scott - who has kids Mason, eight, Penelope, six, and Reign, three, with Kourtney - comes to the defence of Kim.

He said: "But that's your sister! You say bad things about her too. You call her a porn star every time I talk to you."

Another social media claimed Kourtney ought to feel grateful towards her younger sister for helping to make 'Keeping Up with the Kardashians' a worldwide success.

In response, Kourtney quipped: "I was gonna write back and say, 'If it wasn't for my personality and being funny then our show wouldn't exist.'"

And Scott - who split from the brunette beauty in 2015 - added: "Ha! For sure, without you this whole thing would be dead."