No girls allowed: One Direction's Harry Styles 'sex ban'

The 18-year-old heartthrob spent his last night in town partying with Emma Ostilly, a New Zealand-based American model who was snapped sharing a kiss with him at the weekend. But when Harry tried to bring Emma and her pretty blonde friend back to his hotel room at 3am, his security team stepped in to enforce a "sex ban" placed on the band by their management, according to a report by The Sun.

MORE: One Direction members catch chlamydia Down Under?

Harry and the girls were on their way back to his posh hotel in a convoy of vans when somebody poured cold water on his plans for the evening.

"The van pulled over suddenly and Harry jumped out and was swinging on the door, standing in the road and shouting," a witness told The Sun.

"Then, around the corner, the doors on both sides were being opened even as they drove along. It was nuts.

"When they got out and walked a few minutes later, Harry's minder was wrestling with him. Obviously, it was an uneven contest and good humoured — but Harry was a real handful."

After a short night's sleep — alone — Harry was seen boarding a flight to Wellington early the next morning.

Meanwhile poor Emma has been forced into hiding after receiving death threats from possessive One Direction fans. The 18-year-old has deleted her Twitter account and changed her name on facebook after sites like "I Hate Emma Ostilly" were set up by haters, branding her a "b---- wh---" who deserved to "die in a hole".

Angry fans say they're targeting her because they believe she's cheating on her boyfriend, US sailor Sean Gallagher.