Billie Eilish is just a stage name, the full name of this wonderful American singer-songwriter is Billie Eilish Pirate Baird O'Connell. Billie Eilish was born on December 18th, 2001 in Los Angeles in a family of actors and musicians Maggie Braid and Patrick O'Connell. She joined the Los Angeles Children's Chorus at age eight, and at eleven Eilish began writing songs and teaming up with her brother Finneas who already was performing his songs with his band. Together in 2015, they released two songs on SoundCloud. And in 2016 her single "Ocean Eyes", under the name Billie Eilish was released and was a viral hit. A fanart Billie Eilish custom progress bar for YouTube.