The Bikini

The bikini or two piece is a women's swimsuit with two parts, one covering the breasts, the other the groin and, optionally, part or all of the buttocks, leaving an uncovered area between the two. It is often worn in hot weather, while swimming or sunning. The shapes of both parts of a bikini resemble women's underwear, and the lower part can range from revealing thong or g-string to briefs and modest square-cut shorts. Merriam–Webster's Collegiate Dictionary (11th edition) describes the bikini as "a woman's scanty two-piece bathing suit", "a man's brief swimsuit" and "a man's or woman's low-cut briefs".

While two-piece bathing suits had been worn on the beach before, the modern bikini was invented by French engineer Louis Réard in 1946. He named it after Bikini Atoll in the Pacific, the site of the Operation Crossroads nuclear weapon tests in July that year.

The bikini is perhaps the most popular female beachwear around the globe, according to French fashion historian Olivier Saillard due to "the power of women, and not the power of fashion". As he explains, "The emancipation of swimwear has always been linked to the emancipation of women."[1] By the mid 2000s bikinis had become a US$811 million business annually, according to the NPD Group, a consumer and retail information company.[2] The bikini has boosted spin-off services like bikini waxing and the sun tanning industries.

The bikini has spawned many stylistic variations. A regular bikini is defined as a two pieces of garments that cover the groin and buttocks at the lower end and the breasts in the upper end. Some bikinis can offer a large amount of coverage, while other bikinis provide only the barest minimum. Topless variants may still be considered bikinis, although technically no longer two-piece swimsuits. [23][24]  Along with a variation in designs, the term bikini was followed by an often hilarious lexicon including the monokini (top part missing), seekini (transparent bikini), tankini (tank top, bikini bottom), camikini (camisole top and bikini bottom) and hikini.[25]  Since fashions of different centuries exist beside one another in early 21st century, though it is possible to imagine a woman combining a bikini and a 1910 bathing costume.[26]

Bikini tops come in several different styles and cuts, including a halter-style neck that offers more coverage and support, a strapless bandeau, a rectangular strip of fabric covering the breasts that minimizes large breasts, a top with cups similar to a push-up bra, and the more traditional triangle cups that lift and shape the breasts. Bikini bottoms vary in style and cut and in the amount of coverage they offer, coverage ranging anywhere from complete underwear-style coverage, as in the case of more modest bottom pieces like briefs, shorts, or briefs with a small skirt-panel attached, to almost full exposure, as in the case of the thong bikini. Skimpier styles have narrow sides, including V-cut (in front), French cut (with high-cut sides) and low-cut string (with string sides).[23][24] In just one major fashion show in 1985 were two-piece suits with cropped tank tops instead of the usual skimpy bandeaux, suits that are bikinis in front and one-piece in back, suspender straps, ruffles, and daring, navel-baring cutouts.[27] Subsequent variations on the theme include the monokini, tankini, string bikini, thong, slingshot, minimini, teardrop, and micro.[28]