Zara plisse (very fine pleated) black knee length skirt and either black net with bronze sequins bodysuit (Silk Fred) or Zara sequinned black tight/draped top. Add John Lewis velvet with diamante buckle shoes or Oliver Bonas Western pewter ankle boots. Add black sequinned blazer (forget where from).
Or a Next dark grey sparkle pleated fine knitted v neck dress with silver sparkle, black River Island thicker camisole underneath it. Next Forever Comfort range court shoes and Oliver Bonas cream, black and gold cardigan or sequinned blazer.
Add diamante jewellery though I prefer slightly bohemian dressy jewellery and recently bought some dangly earrings that looked sort of All Saints in style from a vintage shop in Bromley.