Who is Billie Eilish's brother, Finneas O'Connell?
This image appears in the gallery:
Billie Eilish: 29 facts about the Happier Than Ever singer you need to know
8. Who is Billie Eilish's brother, Finneas O'Connell?
Billie Eilish’s older brother Finneas O’Connell is a famous musician and actor best known for his starring role as Alastair in Glee. Billie co-writes the majority of her music with Finneas and he produces it. [@billieeilish via Instagram]