Charli XCX can do complicated and weird, and that all turns out pretty well. But when she just does a straight pop song, it turns out really, really well. XCX is slowly taking over the pop world, from helping launch Ryn Weaver to stardom and contributing a killer part to Iggy Azalea's huge hit "Fancy." And if her latest single is any evidence, she's still just warming up. "Break the Rules," debuted on BuzzFeed this morning, and it's basically a sign that her next album is going to be all you're hearing when it comes out two months from now.