It's no surprise that One Direction have won over the hearts of ladies worldwide with their fit faces and lovely voices so we aren't shocked to hear that their public appearances caused a little disruption. But according to Harry Styles the fans were so overwhelming in Italy that riot police had to be called upon to calm down the madness! Well Italians are known for their passion...

Harry told The Sun: "We did a couple of signings in Europe and it surprised us how many people were out there. It was crazy in Italy. Riot police had to protect us and nearly had to shut down the whole event. There were 3,500 people. Optimistically, we were expecting 200.

"Two hundred? Seriously? We could probably gather together two hundred people desperate to meet 1D from our Facebook friends alone.We think the boys need to prepare themselves for some Justin Bieberstyle pandemonium when they take themselves to The States.

What do you think? Reckon it's cute that they didn't realise how popular they were in Europe? Think the boys will crack America?