Hawaiian shirts have taken men's fashion week by storm, begging the question: Is that a tourist or street style star? Or both? The trend can be traced back to Saint Laurent, when Hedi Slimane brought his Spring 2016 show to Los Angeles and fell in love with palm trees. Other brands like Gucci, Valentino, Off-White, and Our Legacy caught on and have since presented their own adaptations of the classic print. Then Justin Bieber got on board, and the rest is history.