| Billie Eilish Pirate Baird O'Connell was born in Los Angeles, California, on December 18, 2001 | She is of Irish and Scottish descent |
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| She is the daughter of actress and theater troupe teacher Maggie Baird, and construction worker Patrick O'Connell who was a part-time actor; both of whom are also amateur musicians |
BILLIE EILISH's billieeilish Instagram profile• The singer's middle name, Eilish, was originally meant to be her first name.