One Direction's debut video hits one billion YouTube views

One Direction at the 2015 American Music Awards at Microsoft Theater. Nov. 22, 2015. Credit: Brian To/WENN.com

One Direction's video for "What Makes You Beautiful" has become their first promo to crack the one billion views milestone on YouTube - seven years after its release.

The song served as the boyband's debut single from their first album, Up All Night, back in 2011, a year after Liam Payne, Louis Tomlinson, Harry Styles, Niall Horan, and Zayn Malik were grouped together by music mogul Simon Cowell on British talent show The X Factor.

The five-piece went on to become global superstars, before embarking on an indefinite hiatus in early 2016, less than a year after Zayn quit the band.

Despite currently pursuing solo careers, One Direction's loyal fans have continued to play their videos online, and What Makes You Beautiful has proved to be their most popular release to date, breaking