Katie Price's children broke down in tears as they revealed her wild partying and drug problems left her "unable" to look after them.

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 while their mother was out and Junior revealed the terrifying moment he realised the former glamour model was high when she came home.

Junior said: "I remember missing her so much and I remember this one time in particular, I was in her bed waiting for her to come back.

"I woke up, probably about 3.30am, to some loud noises. I saw her coming in the room and I'll never forget the look on her face … she was obviously on stuff, right? I could see it in her eyes.

And it scared me because I've never seen my mum look like that. She's there but she's not there. She wasn't being a mum. She wasn't the mum that I knew from being a little, little boy.

"Mum was on drugs and she could not look after us, and that is the reality of it. She couldn't."

Junior and Princess are Katie's kids from her marriage to pop star Peter Andre and she's also mother to eldest son Harvey, 24, from a previous relationship who has special needs, as well as Jett, 12, and Bunny, 10, with ex-husband Kieran Hayler.

Junior went on to explain the siblings rallied around and looked after each other with the elder kids learning how to microwave meals to feed the family.

He said: "We was kind of like the siblings we'd just look after one another quite a lot. I remember me trying to figure out 'Is this food microwavable?' to feed us for dinner.

"Not that she didn't feed us, but she was out all the time."

Junior eventually went to live with his dad and he explained it was a much healthier environment, saying: "I got fed up. I clocked on that this was a very unhealthy environment and I needed to get out.

"I think I was about 14 or 15. Thank God that my dad was stable, because that's the house that I went to and gained my sanity back.

"You know while I was wishing and hoping that my mum would come back and turn herself around, it made me feel like I wasn't good enough because she wasn't fixing herself for me, and fixing herself for US. Are we not good enough for you? Why? Why?"

The pair both cried during the interview and Princess was visibly emotional as she talked about her mum's absences, saying: "She'd give me a blanket, and she sprayed all her perfume on it, and that was like that was my, my attachment to Mum.

"So I remember after school I used to go home and just feel so like lonely in a way. I used to just cuddle to the blanket and just cry."

Princess added: "I stayed. I always wanted to be there for her, and I always wanted to show her that, like, she has me, she has us, but she didn't understand that at the time, because she was so hooked up in her own problems."

Junior went on to praise Katie for turning her life around as they now have a much healthier relationship.

He said: "She helped herself by getting off the drugs and being a mum again. I feel the duty to care for her. she's like such a special gem to me, do ya know what I mean?

"Because she's my mum and I've only got one. It feels like I've got our mum back now, we know that she's crazy and she knows that and we lover he for it and well always be there for her."