15 Billie Eilish Halloween Costume Ideas For All You Bad Guys

If you're feeling moody and not so much in the Halloween spirit, Billie's outfit in her music video for "When the Party's Over" is easy to pull off. Honestly, you probably already have it in your closet.

What to wear: A white t-shirt, leggings, and sneakers. You'll also need a blue wig, chunky silver jewelry, and some costume makeup (if you've seen the video, you know).