Uh-oh, SpaghettiOs! If you're looking for an easy-as new detail to upgrade your kit, let us introduce you to metal hoops. Everything from round ring-pull zips, to structured loop jewels and circular hair accessories have been trending this week – on street style stars at Stockholm Fashion Week, Instagram babes and the couture catwalks. They've all been stalked for this subtle styling switch-up: consider it your instant way to activate swag! Here's how cool girls have been doing it...