While Grammy Award-winning Justin Bieber might have one of the best trainer collections in the world – ultra-rare Riccardo Tisci Nikes, Kanye West-designed runners and Travis Scott's Air Jordans are just a few of the weapons in his arsenal – he's also no stranger to slipping into a pair of opinion-dividing Crocs. The 27-year-old “Yummy” singer has long been a stan of the plastic footwear, which are favoured by NHS workers and chefs alike. Case in point, for the best part of the past five years he's worn them with everything from daytime pyjamas to oversized fleece shorts from his own brand, Drew House.