Khloe Kardashian has opened up about her brother Rob Kardashian in her new book, Stronger Looks Better Naked.

The KUWTK star took the opportunityto set the record straight about Rob's recent disappearance from the media spotlight, as well as express her annoyance at people who complain but don't do anything about it.

"Take my brother Rob. I love him and he knows I love him, but he fell into a deep, dark place and couldn’t find his way back," she writes.

She goes on to add that he tried to "fix things his way", which didn't go to plan.

"It was a waste of time. The truth is, he wanted too much too soon, and his unrealistic explanations totally short-circuited his efforts."

Rob has previously hit out at sister Kim Kardashian for speaking about his problems in an interview, so we're not sure how he'll react to Khloe's opinion on things...

But she is his favourite, so maybe she'll get away with it.

- By Lucy Bacon