But what the 38-year-old didn't count on was the angry mums who weren't too pleased about her scathing comments on their children.

KATIE HOPKINS: 'IF YOUR CHILD HAS NITS, IT'S THE MUM'S FAULT'

When asked about eight-piece boy band Stereo Kicks , Katie replied: "They look like teenage boys waiting at an STI clinic to find out some really really bad news.

'Oh my God, what have I caught, who have I slept with, what have I caught?'"

According to an X Factor insider, some of the Stereo Kicks' mums were quick to jump to their boys' defences.

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The source said: "The families began shouting and hurling abuse. One of the mums was right up in her face, saying that she looked like a horse and was despicable.

"One of them asked how she'd like it if people abused her children."

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Unlike Katie, she allegedly lost her cool and was quick to flee the studio. The source continued: "Katie was rattled – and in the end security and her own chaperone sneaked her out the back."

It's not the first time Katie's has something unpleasant to say about one of the X Factor acts.

Of the 'Italian teddy' Andrea Faustini, she said: "Andrea would be better suited to The Voice. Before the chairs turn around.

"I sodding hope that Andrea's fillings aren't magnetic. Or that microphone is heading straight for his stomach."