Nickelodeon Kids' Choice Awards 2010 - StyleList

Katy Perry flexes her fashion muscle. Photos: Michael Buckner/Getty Images; Larry Busacca/KCA2010/Getty Images for KCA; Angela Weiss/Getty ImagesThe Nickelodeon Kids' Choice Awards are always a spectacle. Though it may seem an unlikely place for us Hair extensions grown-up editors to look for style, we've come to depend on the KCA red carpet for off-the-wall fashion choices on some of the hottest young stars.This year, Katy Perry wasn't hosting, but you might think she was given all the outfit changes. The super-talented beauty flaunted her body in a strapless, iridescent metallic mini and glittery wedges. We all held our breath hoping the outfit stayed in place, which it mercifully did.Next, Perry slipped into Feather hair a body-hugging bright yellow dress with blue flowers and a matching wig. We have a sneaking suspicion that wig was more about function than form, as Perry shortly thereafter found herself being slimed on-stage with some of Nickelodeon's famous green goo.The wig seemed to do its job and protect Perry's 'do, which looked glossy and perfect when she showed up for the after-party in a low-cut red corset. We're betting fiance Russell Brand was a fan of that one.Rihanna and Miley Cyrus had opposite ideas for the dress code. Photos: Kevin Winter/Getty Images for KCA | Kevin Mazur/KCA2010/WireImageThe other wacky dresser to catch our eye was, frankly, no surprise. Rihanna hasn't worn anything simple, basic, or predictable in a long time. Here, she performed in a Little Bo Peep meets G.I. Jane getup, including shocking pink feather extension puff sleeves and a puffy tulle-stuffed skirt.Finally, Miley Cyrus looked like she just stopped by to hang out in a simple white tunic top and skinny jeans. Not exactly your typical red carpet outfit, but then again, the Kids' Choice Awards aren't your typical awards show.See a video of Katy Perry getting slimed here.