The slang of the moment: The cool girl is what everyone wants to be in today’s lingo. Many people wonder about the cool girl meaning, as it can depend on who you ask. I think a cool girl is typically someone who never sacrifices her integrity, knows when to show vulnerability, and doesn’t give up on being herself. Knowing the cool girl meaning shows us that the key is actually more to do with authenticity and self-assurance rather than what you look like on the surface. The cool girl —so the embodiment of laid-back style tinged with an air of independence—has a long, storied history here in the US. At the end of the day, a cool girl meaning really is all about someone that knows who they are and owning it (in a positive way, obviously). In whatever shape — fashion, attitude, personality; what you are is a cool girl that embraces your perseverance in hoping others do the same.