Details, Size & Fit. Add The Dorothy Perkins Knot Front Body-Con Dress to your evening repertoire. The dark hue and knot feature are super flattering for every figure. Ourmodel. iswearing a size 8 dress. She usually takes a Standard AU8 size, is 5’7”(170cm)tall and has a 64cmwaist. Length: 100cm Fitted design Lustrous jersey; lined upper Boat neckline 1/2 length sleeves Centre knot feature Midi length.Cool machine wash with similar colours. Length: 100cm.fabric / material: Woven.Material: Main: 95% Polyester & 5% Elastane; Lining: 100% Polyester.SKU: DO894AA83JBK.