Heartthrobs One Direction have revealed that they've been shocked by the number of fans that have 'flashed' them while on stage in the USA. 

The lads, who have been supporting boyband Big Time Rush on their American tour this spring, explained that some of their female fans have been a little overzealous although they're definitely not complaining about it.

Niall Horan explained:

"We've had a few flashers - but we're not encouraging it, or deterring it! The craziest thing was supporting US boyband Big Time Rush - all the fans were wearing our T-shirts and holding One Direction banners, too.''

This revelation comes just after Horan admitted that his band members like to let loose by running around naked in hotels.