Wednesday marks such a monumental moment!
Five years ago, Simon Cowell joined together five souls in musical matrimony, that would go on to be the biggest boy band in recent history.
One Direction was given a second chance on the show, and went on to secure third place overall. But it's safe to say the fivesome might as well have won.
1D became a global sensation, and Harry took to Twitter on the group's anniversary to share sentimental statuses about their incredible journey: