Exclusive backstage interview with Best Original Song - Motion Picture winners Billie Eilish and Finneas O'Connell for Barbie's "What Was I Made For" at the 81st Golden Globes.
Allure's October cover star Billie Eilish breaks down every detail of her music video for 'What Was I Made For?' from the 'Barbie' soundtrack. From spending "days and days" finding the right wigs for the look to deciding yellow…