Billie Eilish Is 'Terrified' About Her 18th Birthday

Billie Eilish Is 'Terrified' <br />About Her 18th Birthday Eilish's birthday is on December 18th. She has some concerns that potential haters <br />could come out of the woodwork and make <br />their feelings known once she isn't a child anymore. Billie Eilish, to 'Extra' Billie Eilish, to 'Extra' Eilish recently praised her brother, <br />Finneas, and said they have been <br />"best friends forever." Billie Eilish, via statement