Popsugar Beauty Hair See Photos of Billie Eilish's Brunette Hair Colour Well, That Was Fast: Billie Eilish Is a Brunette Now 4 December 2021 by Kelsey Garcia View On One Page Photo 2 of 2 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 2 Previous Next Start Slideshow HairCelebrity BeautyHair ColorBillie EilishCelebrity InstagramsCelebrity Beauty InstagramsBrunette HairCelebrity Hair