A statement jumpsuit like DVF's Ireland style makes a standout alternative to an LBD or tux come cocktail hour. It's made from a chainlink-print silk-crepe that's nipped at the waist and flares into a flattering wide leg. A deep halterneck front and open back are examples of that all-out 1970s glamour the label is famed for – keep them the focus with bronzed shoulders and minimal accessories.