United Kingdom, July 8 -- Katie Price "never knew" how much her children suffered during her breakdown.

Junior, 20, and Princess, 19, opened up about their troubled childhoods in new Sky documentary Katie Price: Nothing to Hide revealing they were often left to fend for themselves and cook their own dinners while their mother was out partying and coming home high - Katie has now admitted she had no idea what the children were going through as she thought she was trying to be the "perfect mum".

During an appearance on ITV show This Morning, she explained: "[It was] awful ... They are amazing. And when they done the interview ... They said: 'Mum if we're going to do this, we're going to be brutally honest ... and I said: 'I want you to sp...