Drastic Celebrity Hair Color Changes: Dye-ing For Beauty! (PHOTOS)

Katy Perry has played with every possible hair color, so we often forget the "Part of Me" singer is a natural blonde. She returned to her colorful ways when the MTV Europe Music Awards rolled around on November 6, 2011, and she then went from pink to blue after her December 2011 split from husband Russell Brand — right in time for the 2012 Grammy Awards.