Pierre Cardin is a French fashion designer who has been in the industry since 1945. He is best known for his avant-garde style and space age designs. He was the first couturier to introduce the concept of 'ready-to-wear' clothing, which revolutionized the fashion industry. His designs have been worn by celebrities such as Jackie Kennedy and Elizabeth Taylor. He is also the founder of the Pierre Cardin fashion house, which is still active today.