Billie Eilish Dishes on Turning 18, Winning a GRAMMY and What's Next | Full Interview

ET sat down with Eilish exclusively at the GRAMMY Museum in Los Angeles ahead of her intimate show and fan Q&A, where she also dished on her upcoming and 'terrifying' performance on 'SNL,' turning 18 and what winning a GRAMMY would mean to her -- she could make history!

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