Popular conceptions of 1950s dress usually fixate on the defined waist and full skirt of Christian Dior's New Look. Though this silhouette dominated fashion for much of the decade, in 1957 a new shape appeared. Called the sack or chemise, this new dress skimmed and enveloped the body instead of enforcing an hourglass silhouette. Presented by both Christian Dior and Balenciaga, credit (and blame) for the innovation went to Balenciaga. Variations on the chemise soon appeared, including this belted Empire-waist version designed by Balenciaga.