Las Vegas Sun - Photograph : One Direction Billboards

October 23, 2018

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From left, Louis Tomlinson, Niall Horan, Harry Styles and Liam Payne of One Direction accept the award for top duo/group at the Billboard Music Awards at MGM Grand Garden Arena on Sunday, May 17, 2015, in Las Vegas.

Chris Pizzello / Invision / AP

From left, Louis Tomlinson, Niall Horan, Harry Styles and Liam Payne of One Direction accept the award for top duo/group at the Billboard Music Awards at MGM Grand Garden Arena on Sunday, May 17, 2015, in Las Vegas.