Charli XCX performs in front of her "Brat" installation at Storm King Art Center.Henry RedcliffeCharli XCX previewed her new remix album at Storm King Art Center in upstate New York.The picturesque event marked the official transition from "Brat summer" to "Brat autumn."Likewise, "Brat and It's Completely Different But Also Still Brat" aims to extend her dominance."We're fine art bitches now!"Such is how Charli XCX welcomed a throng of reporters, influencers, and loyal fans to Storm King Art Center on Thursday, a sprawling landscape in upstate New York that's dotted with ambitious, large-scale art installations.