What does a cool girl mean? Cool girl means cool girl. The cool girl is a very cool and attractive girl. In short, it means someone who looks cool. The cool girl's dress creates a modern and beautiful shape, and the colors are white, blue and black. Light and cool colors can also bring visual freshness in summer. In order to shape the image of a cool girl, accessories can play a final touching role and change their sweet style. Soft jewelry features are not found in cool girls. The little woman with shiny decorations and bow elements is missing. Generally speaking, cool girls don't have much jewelry. When they wear neutral necklaces, they will wear long pendant necklaces.