On July 5, 1946, French designer Louis Réard unveils a daring two-piece swimsuit at the Piscine Molitor, a popular swimming pool in Paris. Parisian showgirl Micheline Bernardini modeled the new fashion, which Réard dubbed “bikini,” inspired by a news-making U.S. atomic test that took place off the Bikini Atoll in the Pacific Ocean earlier that week.
European women first began wearing two-piece bathing suits that consisted of a halter top and shorts in the 1930s, but only a sliver of the midriff was revealed and the navel was vigilantly covered. In the United States, the modest two-piece made its appearance during World War II, when wartime rationing of fabric saw the removal of the skirt panel and other superfluous material. Meanwhile, in Europe, fortified coastlines and Allied invasions curtailed beach life during the war, and swimsuit development, like everything else non-military, came to a standstill.