Bikinis are a type of swimwear consisting of two separate pieces: a top and a bottom. They were introduced by French designer Louis Réard in 1946 and are named after Bikini Atoll, the site of atomic bomb tests, reflecting the explosive impact they had on fashion. Initially met with controversy due to their revealing nature, bikinis have since become an iconic symbol of summer and beach culture worldwide. They come in various styles, including string, bandeau, high-waisted, and more, catering to different body types and fashion preferences. Made from materials like nylon, spandex, or polyester, bikinis are designed for swimming, sunbathing, and beachwear, embodying both practicality and style.