Jacques Heim's and Louis Réard's original bikini from 1946 (that introduced the term bikini) had a culotte with a thong back.Fashion designer Rudi Gernreich, who in the mid-1960s created the first topless swimsuit, which he called the monokini, is credited with introducing the modern thong in 1974 Attitudes toward the wearing of g-strings vary geographically and across societies, as is usual with highly revealing clothing.Australians often colloquially refer to the G-string as a g-banger or simply banger.Some names for the thong reference the bareness of the buttocks, as seen in the Spanish word colaless (the origin is probably connected to the term topless but in reference to cola, colloquial term for butt in South American Spanish), and in other names the "T"-like shape of the back is highlighted. According to the Encyclopedia of Clothing and Fashion, "The G-string, or thong, [is] a panty front with a half- to one-inch strip of fabric at the back that sits between the buttocks", and Knickers: a Brief History says: "Minor tweaks to the cut earned these skimpy panties different titles—from the thong, which has a one-inch strip of fabric down the back, to a G-string, which, as the name equivalent of Spanish suggests (hilo dental), is more like a string of fabric akin between the teeth." and according to Americanisms: the Illustrated Book of Words Made in the USA a G-string is "a thong panty consisting of a small triangular piece of fabric supported by two elastic straps. The thong, like its probable predecessor the loincloth, is believed to be one of the earliest forms of human clothing and is also thought to have been worn mostly or exclusively by men.Prior to its entrance into mainstream fashion, g-strings were primarily worn by exotic dancers.In the modern Western world, g-strings are more commonly marketed towards females but are worn by both sexes.
By the late-1980s, the style (for females) had made its way into most of the Western world; thong underwear became more popular through the 1990s due to TV shows such as: Baywatch, where numerous females were recorded wearing thong swimsuits.
In Europe, thongs have been commonplace for many more years both as underwear and swimwear.