Rob insults sister Kim Kardashian on instagram...

It looks as if there could be some deep anger among the Kardashian siblings.

Rob, the son of Kris Jenner and the late Robert Kardashian, made a disturbing Instagram post on Sunday where he drew a parallel between his sister Kim, 34, and the cunning villain of the 2014 drama Gone Girl, played by Rosamund Pike.

'This is my sister Kim, the b**** from Gone Girl,' the 28-year-old E! star wrote in his caption.