Microkini

A micro bikini (or microkini) is a bikini, a bathing suit for women. Like a bikini, it is made of two parts, a top, and a slip. The slip usually only covers the labiae, the top only covers the nipples. Microkinis were developed in the 1970s, because nudism was outlawed in many parts of the United States. Many microkini models are transparent. They usually do not cover the buttocks. There are versions which are just made of straps of fabric which cover almost nothing. Before wearing a micro bikini, women usually shave at least part of their pubic hair.
Pasties can be seen as a variant of a microkini: Unlike a top, which is made of fabric, pasties are made of plastic; they are not kept in place with cords.