Popsugar Beauty Christina Aguilera Christina Aguilera Just Brought Back Her "Dirrty" Hair Color There's Something So Comforting About Christina Aguilera Bringing Back Her 2000s Hair December 8, 2021 by Kelsey Garcia View On One Page Photo 1 of 7 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 1 See Christina Aguilera's Hair at the 2021 People's Choice Awards Previous Next Start Slideshow Christina AguileraNostalgiaCelebrity HairPeople's Choice AwardsCelebrity BeautyHairThe 2000s