[Image via Dennis Van Tine/Future Image/WENN.]
As we previously reported, the youngest member of the KUWTK family attempted to take a jab at her brother on Instagram after news broke that the sock mogul was seeing Miz Jenner's on-again/off-again beau Tyga's baby momma.
Not to mention, the Rack City rapper's ex is known for getting into it with King Kylie in the past. So it's no surprise that the lip kit designer is taking this new romance personally. One source shared:
"Kylie is livid. She feels super betrayed and can't understand why someone in her own family would stab her in the back like that."
Who knows, maybe Blac and Rob are just simply meant to be — despite the fact that rumors are circulating, saying the video vixen is "preying" on the poor guy.
What do YOU think?! Does Kylie have a right to be pissed at her big bro??
SOUND OFF in the comments (below)!