Kim Kardashian West fuming she is "playing second fiddle" to her siblings

A source shared: "Kim doesn’t like playing second fiddle.

"Kris is barely giving her a thought and it’s making Kim’s blood boil."

Kim, 34, is believed to be equally upset over her sister's new look and is angry after Khloé stopped listening to her about her weight.

The insider added: "Khloé's the one laughing. Everyone’s asking, ‘How’d you get that body?'

"She’s feeling good about herself and she deserves it. She’s not listening to Kim and her pathetic put-downs anymore."

And Rob's feud with Kim - which reached boiling point when he shared a photo on Instagram, comparing the television personality to the "bitch from 'Gone Girl'" - is said to have escalated because he was fed up of "holding his tongue".

The source added to US' OK! magazine: "That was just the way he was feeling and he couldn’t be bothered to hide it.

"Rob and Kim’s personalities don’t click, and like everyone else, he’s done holding his tongue."