Popsugar Beauty Hair Billie Eilish Admits to Wearing a Halloween Costume Wig Billie Eilish Legit Wore a Billie Eilish Costume Wig Before Publicly Debuting Her Blonde Hair 11 May 2021 by Kelsey Garcia View On One Page Photo 1 of 8 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 1 Watch Billie Eilish Talk About Her Blond Hair on The Late Show Previous Next Start Slideshow HairCelebrity BeautyBillie EilishThe Late Show With Stephen ColbertLate Night HighlightsBeauty NewsHair ColourBlonde HairCelebrity Hair