One Direction: This Is Us - World Premiere - Red Carpet Arrivals [Getty Images]

LONDON, UNITED KINGDOM - AUGUST 20: Harry Styles, Niall Horan, Louis Tomlinson, Zayn Malik and Liam Payne of One Direction attend the World Premiere of 'One Direction: This Is Us' at Empire Leicester Square on August 20, 2013 in London, England. (Photo by Fred Duval/FilmMagic)

FilmMagic Fred Duval