In the United States, the general trend in fashion was towards simplification and longer skirts, although many women reacted negatively to the midi-length, which they felt to be aging. Pants, on the other hand, earned unanimous approval. Jeans profited most from becoming an accepted part of the American fashion scene in the 1970s, their new-found respectability deriving from their inclusion in collections under the heading of sportswear. The new stars of American ready-to-wear adapted the best of what they learned from Europe to the massive American clothing industry. Calvin Klein and Ralph Lauren rose from anonymity more or less simultaneously to tackle the question of designing clothes for the men and women of a new world. Two opposing movements dominated fashion in the U.S during the 1970s. On one hand, there was the tailored, unisex look; on the other hand, a fluid, unstructured style with a strong feeling of 1930s glamor. The most influential American designer of the time, Roy Halston Frowick (known simply as Halston), belonged to the latter category. Acquiring celebrity status on the New York scene, his particular talent was in reconciling the made-to-measure garment for the special occasion with concepts of comfort, naturalness, and relaxation. With his kaftans, shirtwaisters, djellabas, ultra-lightweight shift dresses, and tunics worn over shorts and wide-legged pants, he was an icon of the era, and a regular visitor at the VIP room of the Studio 54 after its opening in 1977.