WACKY: Katy Perry upped the shock value during her performance, stripping off her robe and revealing a nude, crystal embellished bodysuit.
WACKY: Redfoo and SkyBlu stripped down on the stage into their skivvies, shocking fans with their creative undergarments.
BEST: Lucy Hale was perfectly put together, wearing a Peter Som peplum dress with Brian Atwood heels and a box clutch.
BEST: Carly Rae Jepsen added a colorful edge to her goth gown, with the help of neon embellishments and bling.
BEST: Shenae Grimes showed some leg in a slitty black dress, which she accessorized with gold accents.
BEST: Kelly Clarkson showed off her slimmed down figure in a sexy dress on the stage.
BEST: Selena Gomez sizzled in an impeccably embellished Roberto Cavalli micro mini.
WORST: Justin Bieber hit the stage, wearing bright red leather saggy pants!
BEST: Nelly Furtado showed off her swerving curves in a white hot strapless mini dress, adding snaky sandals.
WACKY: Is Rico Rodriguez looked like the newest member of LMFAO, dressing just like the sassy singers.