Rob Kardashian is on the outs with the rest of the Kardashians after walking out on sister Kim Kardashian’s wedding. However, it looks as though some members of the 27-year-old Arthur George designer’s inner circle believe he may not be an entirely innocent party in the rift with his famous family.

While it was initially reported that Rob left the wedding after his family members made insensitive comments about his weight, it seems that a confrontation between Rob and Kim was the real reason behind Rob storming out.

“Kim and Rob haven’t been speaking to each other for months … she thinks he is lazy, and bringing down the family name because of his physical appearance,” a Kardashian insider reveals to  “After arriving in Paris, Rob and Kim got into a very heated argument because she thought he was just moping around the hotel. She encouraged him to go out and sight see, which he declined to do.”

However, it wasn’t just Kim’s suggestion that he visit the Louvre that got on his last nerve. Sources say it's when Kim accused her brother of selling stories about her to the press that Rob decided he’d had enough.

“That was the final straw for Rob, because that is something he would never do,” says a source.

Do you believe that Rob is selling stories about Kim to the media?