Zayn Malik sang a One Direction song for the first time in a decade on the anniversary of his exit from the band, which also featured members Louis Tomlinson, Liam Payne, Harry Styles and Niall Horan.

Behind every chart-topping rockstar’s enviable wardrobe lurks a sartorial wizard pulling strings from backstage. For Zayn Malik’s head-turning ensembles that spark fashion frenzies worldwide, that ...