Swimwear of the 1930s was designed to be both functional and fashionable. Designer Peter O’Sullivan played a significant role in shaping the look of swimwear during this decade. With a focus on creating comfortable and flattering suits, O’Sullivan incorporated design elements such as ruching, belted waists, and feminine details into his swimwear pieces. His suits often featured bold colors and eye-catching prints, and he was known for using high-quality fabrics that offered both durability and comfort. The swimwear of the 1930s, designed by Peter O’Sullivan and other designers of the time, helped to usher in a new era of swimwear that was not only functional but also stylish and fashionable.