Microkini

The bikini has spawned many stylistic variations. A regular bikini is a two-piece swimsuit that together covers a female's crotch, , and breasts. Some bikini designs cover larger portions of the wearer's body while other designs provide minimal coverage. Topless variants are still sometimes considered bikinis, although they are technically not a two-piece swimsuit.

While the name bikini was applied to the skimpy fashion that first revealed the wearer's navel, the fashion industry considers any two-piece swimsuit a bikini. Modern bikini fashions today are characterized by a simple, brief design: two triangles of fabric that form a bra and cover the woman's breasts and two triangles of fabric on the bottom forming a panty cut below the navel that cover the groin in front and the in back. The amount of coverage can vary widely, from a string bikini with very little coverage to a full design with maximum coverage. A topless swimsuit may still be considered a bikini, although naturally it is no longer a two-piece swimsuit.

These derivations of the word bikini were created through inappropriate analogy with words like bilingual, bifocal and bilateral, which contain the Latin prefix "bi-" (meaning "two" in Latin), the word bikini was first back-derived as consisting of two parts, [bi + kini] by Rudi Gernreich when he designed the monokini in 1964. Later swimsuit designs like the tankini and trikini were also named based on the erroneous assumption that the "bi-" in bikini denotes a two-piece swimsuit. These new coinages falsely presumed that the back-formation [bi + kini] was purposeful.

The "-kini family" (as dubbed by author William Safire), including the "-ini sisters" (as dubbed by designer Anne Cole) has grown to include a large number of subsequent variations, often with a hilarious lexicon. Major stylistic variations and an array of spinoff styles include string bikini, monokini or numokini (single, top part missing), tankini (tank top, bikini bottom), camikini (camisole top and bikini bottom), hikini or hipkini, thong, slingshot or sling bikini (actually a one-piece swimsuit), minimini, teardrop, seekini (transparent bikini), microkini and granny bikini (bikini top and boy shorts bottom). In just one major fashion show in 1985, there were two-piece suits with cropped tank tops instead of the usual skimpy bandeaux, suits that are bikinis in front and one-piece behind, suspender straps, ruffles, and daring, navel-baring cutouts.

...
Wikipedia