As if we needed any more evidence that Christina Aguilera is thee experimental hair muse of our generation (read: she is the trailblazer behind two-tone hair), the singer has only gone and debuted ...

Her butterfly tattoo has been moved to her chest, now that her midriff no longer abides late-’90s fashion trends ... with the knowledge of the Christina Aguilera at the 1999 Teen Choice Awards ...

As if we needed any more evidence that Christina Aguilera is thee experimental hair muse of our ... trends are slowly rewinding things back a couple of decades. Back in the 90s-meets-early 00s, ...