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.

Cue the nostalgia: Here, a look back at Christina Aguilera's hair evolution, which has everything from two-toned highlights to crimped lengths.

Christina Aguilera Goes Makeup-Free for Paper Magazine Cover Christina Aguilera Has Some Advice for How to Keep Platinum Hair Healthy Now check out 100 years of curly hair: ...

Christina Aguilera showed off pink hair streaks in a Valentine's Day post shared to her Instagram. See Christina Aguilera's new pink hair here.

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

In honor of the new ‘Beetlejuice’ movie, Christina Aguilera debuted a neon green hair color with baby bangs. See her latest look here!

Christina Aguilera admits she's no hairdresser, but she's doing the best she can when it comes to doing her daughter's hair.

If I was as famous as Christina Aguilera and had an epic archive of instantly recognizable looks, you wouldn't be able to stop me from going as my younger self for Halloween, like, every year ...