Branding them “STEREO SHITS”, the 39-year-old appeared to revel in their failure to win the sing-off with Lauren Platt, tweeting: “Stereoshits wishing they had spent a bit of time at school instead of practicing with a hairbrush at the mirror. Burger King kick. NEET kick.”
NEETs are classified as those people aged from 16-24 who are not in education, employment or training.
Band member Tom Mann however, was not having any of it, and replied to Hopkins: “I got 3A*s and a B at A Level. You nob.”
Unperturbed, Hopkins continued her rally of abuse, tweeting: “Stereo Kicks army are fleeing like Kurds in a cross fire. Their words of advice are ill thought out… for an army.”
More astute 'X Factor' viewers might recognise Barclay from last year's series, where his yodelling provided much excitement for Nicole Scherzinger. However, he was ultimately ditched at boot camp, where he yodelled his way through a rendition of Aretha Franklin's 'Respect', to the chagrin of Sharon Osbourne, who branded his performance "a joke". (credit:YouTube/The X Factor)
Jake Sims(02 of07)
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Jake's first audition was notable because of the appearance of his younger sister, who sat on the panel next to Simon Cowell.Unfortunately since then he's been in the newspapers for a very different reason, after a rap, recorded on a mobile phone, featuring racial slurs believed to be performed by Jake surfaced online. (credit:Thames TV/Syco/Corbis)
James Graham(03 of07)
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James's first audition saw him telling Simon Cowell he "doesn't like animals", only to then reveal to the music mogul that he "could learn to like them". He's since claimed he only said this because he was nervous in his audition.Which rather begs the question... does James like animals? Or doesn't he?! WHICH IS IT?! (credit:YouTube/The X Factor)
Tom Mann(04 of07)
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Avid 'X Factor' fans may also recognise Tom from last year's series, where he delivered one of the most somber and depressing versions of 'Girls Just Want To Have Fun' we've ever heard, even reducing fellow auditionee Giles Potter to tears.Not quite what Cyndi Lauper had in mind, we don't think... (credit:YouTube/The X Factor)
Charlie Jones(05 of07)
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At just 14 years old, Charlie is the youngest member of the band, but also one of the most popular, especially after his unique take on the Spice Girls classic 'Wannabe' at the arena auditions. (credit:YouTube/The X Factor)
Casey Johnson(06 of07)
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We're guessing Casey is there to fulfill the "cheeky chappy" role in the band, given that he performed an Olly Murs track at his first audition and recently claimed he's "never failed" to get a girl's phone number on a night out. We can now doubt look forward to plenty of #banter from this #lad... (credit:YouTube/The X Factor)
Reece Bibby(07 of07)
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He can sing, he can play the guitar - and he's still only a teenager.In fact, Reece has even performed 'Wonderwall' on stage with Liam Gallagher... but we're sure performing 'Who Do You Think You Are' for Mel B during 'Spice Girls vs Girls Aloud' week is still going to have its appeal... (credit:Thames TV/Syco/Corbis)