In honor of Billie Eilish’s 23rd birthday, Dec. 18, look back at some of the most fascinating facts about the “bad guy” singer’s life—from her breakout album to Oscars history.

The party's over — Billie ... with Eilish's family in December, when they all appeared on stage together at her last KIA Forum hometown show to give her a cake and celebrate her 21st birthday ...

Happy birthday, Billie Eilish! The pop prodigy and Bad Guy singer turns 18 today. The artist, whose full name is Billie Eilish Pirate Baird O'Connell, was born on December 18, 2001, in Los ...

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 ...