A lot can change in five years, and life has certainly moved pretty fast for the five original members of One Direction since they scored their first ever hit in 2011.
Five may have become four, but Niall, Louis, Liam, Harry and former member Zayn can all celebrate today with the news they've scored their first ever million-selling single thanks to What Makes You Beautiful.
Two weeks ago saw the fifth anniversary of What Makes You Beautiful debuting at Number 1 on the Official Singles Chart, and now the song becomes only the 167th single in UK chart history to pass the seven-figure milestone.
What Makes You Beautiful was the first of four chart-toppers for One Direction. Zayn left the band in 2015, but the remaining four carried on to score their final Number 1 album and single, before going on hiatus in early 2016.
Zayn scored a Number 1 with his first solo hit Pillowtalk and debut album Mind of Mine, while Niall became the first of the remaining four to release solo material, scoring a Top 10 with This Town this week.
One Direction's huge achievement sees them join artists like Michael Jackson, the Beatles, Adele, Elton John, Queen and Abba in the exclusive million-sellers' club.
This big sales milestone also makes an impact in the league table of successful X Factor stars.
Take a look at the biggest acts of The X Factor based on chart sales