Brat Girl Summer represents the trendy lifestyle and unique aesthetic associated with being a self-proclaimed Brat, or a devoted fan of the globally recognized Charli XCX. But who exactly can be considered a Brat, aside from Julia Fox or Gabriette, soon-to-be sister-in-law? In a TikTok interview, Charli XCX effortlessly explained what a Brat truly is: "You're that girl who loves to party, has a bit of a wild side, and isn't afraid to speak her mind. She's genuine, straightforward, and a bit unpredictable. That's Brat." And let's be real, the lyrics of "Mean girls" are probably the epitome of what it means to be a Brat on the entire album.