Rob Kardashian left fans puzzled after he dissed his older sister Kim in an Instagram post Sunday afternoon.

The troubled star compared his sister to the main character of "Gone Girl" when he posted a photo of Rosamund Pike's character, Amy Dunne. For those who haven't seen the thriller, Pike plays a deranged woman who kills her ex-boyfriend. Rob posted a photo of the actress in a blood soaked dress with the caption, "This is my sister kim , the b**** from Gone Girl."

Rob has stepped out of the Kardashian spotlight while dealing with depression and his increasing weight gain. Trouble between the two siblings began when Rob decided not to attend Kim and Kanye's wedding last year. There were also reports that Kim has never shown any support for her younger brother as he went through this tough period.

As a result, he has distanced him self from his famous family by unfollowing them all on Instagram. 

Check out the subliminal shot above.

Source: Instagram | Photo Credit: Splash News