To look back on Christina Aguilera’s hair evolution is to see the very best of late ’90s/early 2000s style — turned up to the max. ... 1999: Curly Girly. Steve Granitz/WireImage/Getty Images.

Christina Aguilera's latest Instagram post shows her with big blonde curls reminiscent of the "Lady Marmalade" music video from 2001. See her full Halloween-inspired look, here.

In the image, the woman (possibly Aguilera) has long, curly dark brown hair and is wearing a jean jacket over a rhinestone outfit. ... — Christina Aguilera (@xtina) March 9, 2015.

Christina Aguilera revolutionized the two-toned hair trend in the early 2000s, and especially at the 2002 VMAs.

Christina Aguilera showed off pink hair streaks in a Valentine's Day post shared to her Instagram. ... Scarlett Johansson's New Curly Bob Is Her Most Drastic Hair Transformation.

Christina Aguilera is mom to daughter Summer, 8, fiancé Matt Rutler, ... So every morning I'm up with her before school, trying to use a spiky comb to split her hair in the back," she explains.

Christina Aguilera Revived Her Signature Curls From the Early 2000s. ... c'mon—look at this hair. ... there's no way the look won't influence plenty of other curly girls this Halloween and beyond.