But wait! The source dished much, much more:
[Image via Splash News.]
In case you haven't seen the film, Amy Elliott Dunne — played by Rosamund Pike — is pretty f*cking crazy!
He captioned the bizarre Instagram post:
"This is my sister kim , the bitch from Gone Girl,,,"
While many fans thought there was serious beef between the siblings, in reality, it was simply a joke!
North West's mom said :
"You get purple hair and I get the girl from Gone Girl!"
She later took to Twitter to clarify why Rob posted the pic.
In fact, Rob was laughing WITH Kim at that very moment!
Although they fight, the Kardashian family will always make up!
[Image via WENN.]