EXCLUSIVE AT NET-A-PORTER.COM. Topshop Unique's 'Lambeth' midi dress is perfect for wedding receptions and parties - it's fresh and modern in feel, but not difficult to wear or style. Made from silk-jacquard with matte and satin finishes, this piece is cutout at the shoulder and ruched at the sleeve, with a thigh high split through the skirt. White heels emphasize the contrast of navy.