Kardashians Klash! Kim Attacks Rob For Having 'No Loyalty' To His Family — Watch The Heated Scene Caught On Camera

In a new preview clip for the upcoming episode of Keeping up With The Kardashians, Kim and Khloe sit down to reveal that it's mind-blowing about brother Rob's transformation.

"Question," Khloe asked Kim. "Like, don't we kind of think it's a miracle that Rob, who doesn't even show up for Christmas for the past three years, literally he wouldn't leave his room, but the fact that now he's created a Snapchat, the fact that now he wants to be so public, blows my mind."

Kim responded: "She gave him confidence, more power to her.

"After Rob and Blac Chyna started dating, Rob is now, like, all over social media and, like, out and about," added Kim, 35.

But the sisters talking behind their brother's back didn't stop there. Kim made sure to insert her two cents about how Rob went wrong about going exclusive with Kylie Jenner's arch enemy (Tyga's ex, whom they share 3-year-old son King Cairo).

"But he should have said to us, 'Hey guys, this is how I feel. I can't help who I love, and I fell in love, but Kylie should know this. He just has no loyalty," Kim snaps.

Star previously reported that Rob and Blac Chyna announced they're expecting their first child together, just weeks after announcing their engagement.