Ever since Katy Perry hit the pop music scene in 2008 with "I Kissed a Girl," she's been known for her brightly colored aesthetic. The bold colors in her costumes have translated to her beauty look in the form of over-the-top nail art, rainbow eyelids, and, most prominently, her hair. Katy's mane has been practically every color in the rainbow over the years, from blue and pink to red and even yellow. Celebrate the songstress turning 29 today with a look back at her most memorable hair looks.
Katy Perry's Most-Talked-About Hair Colors Yet!