British boyband One Direction are reportedly enlisting as many as 100 bodyguards to look after them in their upcoming world tour.

The band is ready to kickstart their 'Where we are' world tour in the United States next month, reported Contactmusic. "It's an insane amount of security for one band, but considering the way crowds form around them, it's necessary," a source said.

The band's singers Liam Payne and Niall Horan are apparently concerned about their safety. "It's mainly Niall and Liam who are starting to get really obsessive about security. Liam's fears grew after two fans stole his pants in Australia last year," the source added.