Charli set the mood for the evening right away as she opened with her party girl song "365," accompanied by flashing ... the biggest screams from the crowd was past headliner Billie Eilish, who came ...

Charli set the mood for the evening right away as she opened with her party girl song "365," accompanied ... from the crowd was past headliner Billie Eilish, who came out for their collab "Guess." ...

"I remember just being so mad, and all I wanted was to have a girly name," said the singer in an interview with British Vogue.