However, it was not until the post-war years that the full scale of the inventiveness of this highly original designer became evident. His lines became more linear and sleek, diverging from the hourglass shape popularized by Christian Dior's "New Look". The fluidity of his silhouettes enabled him to manipulate the relationship between his clothing and women's bodies. In 1951, he transformed the silhouette, broadening the shoulders and removing the waist. In 1955, he designed the tunic dress, which later developed into the chemise dress of 1958. Other contributions in the postwar era included the spherical balloon jacket (1953), the high-waisted baby doll dress (1957), the cocoon coat (1957), the balloon skirt (1957), and the sack dress (1957). In 1959, his work culminated in the Empire line, with high-waisted dresses and coats cut like kimono. His manipulation of the waist, in particular, contributed to "what is considered to be his most important contribution to the world of fashion: a new silhouette for women."