One Direction are: Harry Styles, 19; Liam Payne, 20; Louis Tomlinson, 21; Niall Horan, 19; and Zayn Malik, 20. The band was formed in the X Factor's Boot Camp 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.
