Billie Eilish and Charli xcx together on stage Charli xcx shared a recording of the joint performance on X, writing: "love you, Billie and happy birthday!" It's not the first time Billie Eilish ...

It certainly was tonight, when Charli XCX arrived in a Jean Paul Gaultier couture gown that eschewed the neon green that has defined her Brat era for a more elegant light gray. Even without the ...