DOS and DON’TS, musicians and movies to inspire

Dreamy, feminine and detailed, the new evening mood blends luxe, retro and casual pieces to fabulous effect. For proof positive of how easy it is to achieve, see this Dior ensemble on Gigi Hadid. Start with a swishy, embellished skirt in tulle or fine silk, then add the unexpected: a grannystyle cardigan or little sweater, vintage handbag and block-heel sandals.