HUNDREDS of "hysterical" Justin Bieber fans broke into ITV's London studios last night in a bid to meet their idol.
The 18-year-old Baby singer was there to record Alan Carr's Summer Specstacular when 300 girls stormed past security barriers.
The screaming mob were chased by just three security guards. A source said: "It was genuinely scary.
"They're only teenage girls but they were hysterical and had just one thought on their minds — to see Justin Bieber. It was pandemonium."
TV bosses managed to shut the doors to the main building at the last minute.
Meanwhile, the popstar has been given a dressing down for punching members of his entourage in the groin.
Justin and his roadies play a daft game on tour where they have to protect their privates or expect a whack in the crown jewels.
But the Canadian bungled recently when he delivered an unexpected punch to someone who wasn't part of the crew – and it went down very badly.
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