One Direction heartthrob Harry Styles' rise to fame
Harry Styles' life story
October 2010: The band, who say they're now 'really good friends', perform well at the live shows and are consistently voted through to the next round.
After their first performance of Coldplay's Viva La Vida, Louis Walsh makes it clear that he believes they're destined for success.
'I think you could be the next big boy band,' he declares.