One Direction are: Liam Payne, 19; Harry Styles, 19; Louis Tomlinson, 21; Niall Horan, 19; and Zayn Malik, 20. The band was formed in The X Factor's Bootcamp stage in 2010, and left the competition in its final round. They went on to break several records, top the charts internationally, and sell over 20 million records worldwide.