Katie Price says her disabled son Harvey must have "planned" to use an expletive on live television.

Katie Price

Katie Price

The 37-year-old star appeared alongside her 13-year-old son - who was born with rare genetic condition Prader-Willi syndrome and also suffers from autism, ADHD and partial blindness - on 'Loose Women' to raise awareness of online bullying when he called his trolls a "****".

Speaking on Up Late With Rylan, she said: "He must have planned it in his head. Before we went on air I said, Harvey no swearing, and he said 'yes mummy'. I don't want to hide who he is ... I promise he won't swear, I just can't believe it."

During her time on the daytime show, Katie asked her son: "When someone is horrible to Harvey what does Harvey say?" And his reply was: "Hello you ****!"

And Katie - who also has Princess and Junior with her ex-husband Peter Andre and Jett and Bunny with her spouse Kieran Hayler - spoke of the "surprise" she has in store for the Internet trolls who target vulnerable people like Harvey.

She shared to the show's panel, which included special guest Piers Morgan: "A few months ago I came on to talk about the most disgusting things that are said, I wouldn't even be able to say it live on air, but I thought it's important for people to see what he's like. Not manufacture and edit what he's like. And I think something should be done about it.

"So behind the scenes, people may think I've been quiet but I haven't. We've been doing lots of things behind the scenes, so people are in for a surprise, not on this show today but I just want to make people aware of the trolling, I'm definitely doing something about it. To the point that I want to go to schools and educate kids about trolling. You know, what would the trolls do, would they really say it to their faces?"