Billie Eilish knew what she was getting herself into. “I grew up loving documentaries like Believe and Never Say Never,” admits the 19-year-old music phenom, referencing Justin Bieber’s popular concert films. So when a camera crew showed up at her childhood home in Los Angeles in 2018 to film a documentary about the making of her debut album, she welcomed them with open arms — if not exactly optimism. “My entire family and I thought, ‘Eh, it’s never going to actually come out,’ ” she says. “It has been pretty insane and surreal since.”
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