Matthew Williamson's glittering dress has been hand-embroidered with royal-blue , iridescent pewter and lilac sequins , and every dark-purple feather that adorns the hem has been painted by hand. It's the ultimate party look - a black clutch and sandals are the only additions you need.

• Royal-blue, pewter and lilac sequined silk-blend, dark-purple feathers (Ostrich)
• Concealed hook and zip fastening at back
• 50% silk, 50% polyamide
• Specialist clean