Is Billie Eilish actually Finneas O'Connell's sister?
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Finneas O'Connell: 18 facts about the singer-songwriter and Billie Eilish's brother
6. Is Billie Eilish actually Finneas O'Connell's sister?
Finneas O'Connell's sister is singer Billie Eilish. He actually has songwriting and production credits on most of her songs and regularly appears in interviews with Billie to promote her music. Finneas described his relationship with his sister during an interview with Atwood magazine in April 2018. "We're a pretty close knit family to begin with so that’s not really super new," he said on touring together. "We get along really well so it’s been really nice." [Getty]
