The Zac Posen silhouette is instantly recognisable. Sleek and fitted, his pieces are designed to envelop the contours of the body and enhance the waist. With such a flattering shape, this is a classic cocktail piece you'll feel super-confident in. Shown here with Alexander McQueen bangles, a Kenneth Jay Lane cuff, a Christian Louboutin bag and shoes.

Black fitted cotton dress with square cut-out on back. Zac Posen dress has cap sleeves, contrast piping, a scoop neck and a zip fastening on back. 97% cotton, 3% Lycra. Dry clean. US sizing.