This might help explain that "Gone Girl" photo Rob Kardashian posted last month.

In a sneak peek clip from Sunday's "Keeping Up with the Kardashians," Kim Kardashian can't contain her frustrations with her brother -- who she says the entire family has all gone out of their way to please. 

While nobody gets really specific about what issues Rob has been dealing with, it sounds like he's still very self conscious about his appearance. While Kris Jenner wants to use all the family's resources to help him, Kim is clearly over it.

"Everyone licks Rob's ass and does whatever he says and at some point you have to give it up," she says. "We all make his life so easy, 'OK, we'll drive you around with the chauffeur so no one has to look at you!', we had a chef on standby, a trainer. We'll send people to buy you socks and underwear, this is pathetic!"

Rob's issues first started around Kim's wedding, when he left Italy before the ceremony after a fight about his weight. Things haven't gotten any better -- with Rob recently posting a photo of Rosamund Pike's murderous "Gone Girl" character on Instagram with the caption "My sister kim, the b!$%h from Gone Girl."

- See more at: http://www.toofab.com/2015/04/02/kim-kardashian-rob-kardashian-pathetic-video/#sthash.