At the time, Patrick Osborne, who has previously been part of Disney animated projects like the short film Feast and Big Hero 6, did not expect Billie Eilish to present a blonde-haired alter ego of herself for animation, because she was still known to have neon green roots and black hair.
Pretty quickly after, like the rest of the world, the director watched as the singer changed up her iconic look to match her Happier Than Ever era, which seems to be inspired by old Hollywood through a noir lens.