The teen singing sensation ' who has been romantically linked with Selena Gomez - has female fans all around the world but in order to catch his attention any potential girlfriends must have a good sense of humour, as well as pretty eyes and a good smile. He said: ' like girls with nice, pretty eyes and a nice smile. I like girls that are funny because I like to laugh and joke around.'

While Justin is grateful for all the attention, he admits sometimes it gets too much and he is left fearing for the safety of himself, his entourage and his fans.

He explained: 'At a concert in New York last year they expected 1,000 girls and 10,000 showed up, so the security wasn't ready for it. It was a security hazard for the kids 'cos they were pushing up against the glass, so it was really bad. The worst time, though, was definitely in New Zealand where my mom got trampled.'

Last April, the 16-year-old star's mother, Patti Mallette, was knocked over by fans - who also stole his hat ' when they mobbed him at an airport.

At the time, Justin tweeted about the incident, saying: "Finally got to New Zealand last night. The airport was crazy. Not happy that someone stole my hat and knocked down my mama. Come on people."