Lace Thong G-String

What is a G-String Panty?  

A type of skimpy thong. The front of a G-String looks like a thong, but the back band is narrower with just a simple string coming off a thin waistband. G-String panties prevent lines under tight-fitting garments. Their minimal rear coverage makes them very sexy, so G-Strings are commonly worn as lingerie.