Hear Charli XCX and Troye Sivan’s “1999”

In terms of pop music success, Charli XCX and Troye Sivan are each having a major year. Still, they're nostalgic for a year gone by, and tonight, they've released their ode to "1999." Never mind that Charli and Troye were 7 and 4, respectively, back then— it's all about that turn of the millennium energy. Stream the Britney-referencing track below.