One Direction fans are convinced the boys are set to reunite for the band's 10-year anniversary. The buzz around a possible reunion has sparked speculation that the famous boy band is planning something special to mark their formation on July 23. Members Harry Styles, Niall Horan, Louis Tomlinson and Liam Payne have all recently re-followed ex-member Zayn Malik - as has the official One Direction Twitter account. However, Zayn - who left the band in March 2015, has yet to follow them back. Watch