1/11
Xposure/AKM-GSI
Judy Jetson Covers Up!
Katy flashes her silver underwear in the futuristic "Crocodile Scarab" ensemble designed by Roberto Cavalli.
2/11
Christie Goodwin/Getty Images
It's Not Easy Being Green
Just ask this California Gurl.
3/11
Christie Goodwin/Getty Images
Happy
The '90s live on!
4/11
Xposure/AKM-GSI
Baby, You're a Firework
Let your colors burst, sistafriend.
5/11
Christie Goodwin/Getty Images
Flower Power
Because who doesn't love sunshine and happiness?
6/11
Christie Goodwin/Getty Images
Up!
Katy floats her way onstage.
7/11
Christie Goodwin/Getty Images
Yin & Yang
Your tent dress has nothing on Katy's.
8/11
Vantagenews/AKM-GSI
Cat's in the Cradle
Katy's inner-feline is caged...
9/11
Christie Goodwin/Getty Images
Unleashed!
Meow! Be free, pretty kitty.
10/11
Christie Goodwin/Getty Images
Dark Horse
Giddy up, girl.
11/11
Christie Goodwin/Getty Images
It All Twerks!
Feel the light!
NEXT GALLERY: Fashion spotlight on Katy Perry's best looks!