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 ...

In one photo, a 7-year-old Eilish smiles happily in front of a birthday cake designed to look like a vanity. “Happy birthday to my darling beloved Billie! Being your mom has been an ...

At the latter, the night is starting off strong with Billie Eilish joining Green Day for 21st Century Breakdown’s “Last Night On Earth.” Eilish walked onstage partway through the song.