It all started innocently enough with a pretty bow, which then become adorned and before we knew it we were hunting all over the internet for the nearly sold-out Simone Rocha diamanté hair slides. We love the thought of wearing them with a dressed-down shirt and dungarees look, or with a simple polo dress, channelling Margot Tenenbaum. The key to wearing them is to keep everything else super-low-key or risk looking like an aged debutante.