Boy band sets hearts on fire Hundreds of young fans following the British boy band One Direction try and catch a glimpse of them during a ...

Boy band sets hearts on fire

Hundreds of young fans following the British boy band One Direction try and catch a glimpse of them during a morning television appearance in Sydney on April 11, 2012. Devoted fans have followed their every movement, tailing their black security vans across Sydney for press engagements in the hope of catching a glimpse of their idols, aged between 18 and 21. (AFP Photo/Torsten Blackwood)

Hundreds of young fans following the British boy band One Direction try and catch a glimpse of them during a morning television appearance in Sydney on April 11, 2012. Devoted fans have followed their every movement, tailing their black security vans across Sydney for press engagements in the hope of catching a glimpse of their idols, aged between 18 and 21. (AFP Photo/Torsten Blackwood)

Hundreds of young fans following the British boy band One Direction try and catch a glimpse of them during a morning television appearance in Sydney on April 11, 2012. Devoted fans have followed their every movement, tailing their black security vans across Sydney for press engagements in the hope of catching a glimpse of their idols, aged between 18 and 21. (AFP Photo/Torsten Blackwood) Members of British boy band One Direction pose at Nickelodeon's 25th annual Kids' Choice Awards in Los Angeles, California March 31, 2012. REUTERS/Fred Prouser

One Direction greet fans from the "Sunrise" studios at Martin Place on April 11, 2012 in Sydney, Australia. One Direction kicks off their sold-out Australian tour in Sydney on Friday. (Photo by Ryan Pierse/Getty Images)

A young female fan is seen crying after purchasing merchandise at the One Direction promotional store opening on Pitt Street on April 7, 2012 in Sydney, Australia. The store is the only official One Direction merchandise retail venue in Australia and will only be open until April 20. One Direction kicks off thier Australian tour in Sydney next week. (Photo by Mark Metcalfe/Getty Images)

First it was the Obama girls. Now hundreds of young fans following the British boy band One Direction try and catch a glimpse of them during a morning television appearance in Sydney on April 11, 2012.