Helmut Lang's asymmetric LBD is the definitive cocktail look. Raise the glamour stakes with statement cuff and some fierce ankle boots. Shown here with Rupert Sanderson shoes, a Stella McCartney clutch and an Emilio Pucci bangle.

Black wool blend asymmetric dress with pleated chiffon panels. Helmut Lang dress has a boned bodice, an exposed zip fastening on back and is fully lined. 58% wool, 41% romie, 1% elastane; lining: 92% silk,8% elastane; inserts: 70% silk, 30% polyamide. Dry clean.

• US sizing.
• Runs true to size.
• Strapless bra required.
• The mannequin is wearing a US 6.