Seventeen.com did a quick Google, only to discover that Billie Eilish Pirate Baird O'Connell.
Sorry? Pirate?
During an interview with BBC News, Billie explained the meaning behind her name.
Billie Eilish is everyone's new obsession, with her talent and incredible style - we understand why she has shot to fame so quickly.
WATCH: Billie Eilish goes undercover to surprise her fans
The girl is totally unique, so we shouldn't be surprised that her legal name is completely out of this world... but we are.
Seventeen.com did a quick Google, only to discover that Billie Eilish Pirate Baird O'Connell.
Sorry? Pirate?
During an interview with BBC News, Billie explained the meaning behind her name.