Hippolyta

Hippolyta was the Amazonian queen who possessed a magical girdle she was given by her father, Ares, the god of war. The girdle was a waist gelt that signified her authority as queen of the Amazons. She figures prominently in the myths of both Heracles and Theseus. As such, the stories about her are varied enough that they may actually be about several different characters.

Heracles' Ninth Labor
In the myth of Heracles, Hippolyta's girdle was the object of his ninth labor. He was sent to retrieve it for Admeta, the daughter of King Eurystheus. Most versions of the story say that Hippolyta was so impressed with Heracles that she gave him the girdle without argument, perhaps while visiting him on his ship. Then, the goddess Hera, making herself appear as one of the Amazons, spread a rumor among them that Heracles and his crew were actually abducting their queen. So the Amazons attacked the ship. In the fray that followed, Heracles slew Hippolyta, stripped her of the belt, fought off the attackers, and sailed away.