In 2000 the young pop goddess (19) had vivid red clip-in hair highlights when she performed in "My Reflection." With the common color she had very uncommon streaks. This was many years before they became fairly popular as a quick-and-easy way to dramatize your appearance. The different textures, however, don't make it flattering. The natural hair has tight curls whereas the synthetic stuff is stick straight. Courtesy ABC.

Christina Aguilera Hairstyles