One Direction's debut single 'What Makes You Beautiful' has become the most pre-ordered release Sony Music's history.

The debut single from the 2010 X Factor stars will be released officially on September 11 but so many fans have pre-ordered for the release that it has become the most eagerly anticipated song the label has ever seen.

In an interview with Music Week, Syco Music managing director Sonny Takhar said: "We started working with the band immediately after the show had finished – they went to LA and recorded with RedOne. Then, while the boys were out on the X Factor tour between February and April, we started finding and sourcing songs and creating situations where songs were written for the boys in preparation for them to record once they had finished."

One Direction have been revealing behind-the-scenes clips for the video for 'What Makes You Beautiful' all week. The video will debut this Friday (August 19).

Watch the latest behind the scenes look at 'What Makes You Beautiful' here: