Just like her California Gurls video, Katy Perry's 2011 transformation saw every color of the rainbow!
From retro chic to classic and polished, Katy experimented with her style like the daredevil she is. Who could forget when she traded in her raven locks for red ones? Or when she wore that block of cheese on her head?
Take a stroll with us down memory lane as we reflect on the fun pop star's style metamorphosis HERE.
[Image via WENN.]