Fashion has existed all over the world since humanity began living on Earth. The way of life of people has changed just as fashion has changed drastically throughout human history and people are looking for fashionable and also comfortable clothes to wear on any occasion. The simplicity and silhouette that allows the body to feel comfortable while active also became a major fashion trend in the 1900s. Due to the relationship between sportswear and the American lifestyle, its evolution dramatically changed the fashion industry during the 1900s. The early 1900s was a decade full of hope and change in America. Not only men but also women had more opportunities to pursue their careers because there were more jobs available outside the home. America had established an informal clothing culture that was distinct from Europe, and this was due to the rapid growth of industrialization along with the growth of the economy after the war. This has allowed both men and women in America to set the bar for leisure and relaxation. Recreational sports such as tennis, basketball, cycling and swimming were becoming increasingly popular (Warner, 2006). This new shift in culture called for clothing that was durable, utilitarian, and comfortable. The idea of ​​sportswear spread and became a new "American look" that was spreading primarily in New York City, where most of the fashion headquarters were located. Maintaining the concepts of modernity and city life, sportswear has become an essential part of New York City style. Although people in rural areas were not friendly to this new cultural change in America, advertising and the promotion of consumerism allowed New York City to become America's fashion capital. The arrival of the post-war period......middle of paper......the era. As we see in the two images above, its design implies simplicity, comfort and a utilitarian but also innovative style. Her playsuits, high-waisted shorts, skirts and trousers are so simple yet elegant that the models in the photos look comfortable and glamorous at the same time. McCardell barely used decorative elements to make the piece stand out, but played with silhouettes with an excellent choice of fabrics to enhance his collections. He used tweed, leather, twill, wool, chiffon, jersey and cotton extensively. While the pieces in the photos don't show prints, she used a lot of geometric prints and stripes as signature prints. She loved playing with prints and silhouettes to change up the overall vibe. McCardell mentioned in his book: "Clothes have moods. Fabrics have personalities. Prints suggest types. Colors shout or speak