Dramatic, daring, disarmingly demure. The backless dress is a fashion chameleon. From Jean Harlow sizzling in white satin in the 1930s to Spider-Man star Zendaya’s sexy spine outfit, backless dresses have retained their glamour for nearly a century, turning their wearers from prim to jaw-droppingly sexy in a turn of the shoulder. Backless feels sexy without being effortful; it doesn’t need elaborate jewellery or even heels, just a simple updo and your skin will do the talking.