A G-string (alternatively gee-string or gee string) is a type of thong is a narrow piece of cloth, leather, or plastic that covers or holds the genitals, passes between the buttocks, and is attached to a band around the hips, worn as swimwear or underwear by both men and women.
The two terms G-string and thong are often used interchangeably; however, they can refer to distinct pieces of clothing: The primary difference between the two garments is that a g-string has less material between the legs and buttocks, hence a string-like appearance. Variants of the G-string include the V-string, a thong with a triangle "v" of cloth at the top of the rear, and the T-string, where a single string passes around the waist and between the legs, forming a T between the buttocks. See also the general article on thongs.