On the spring 2013 runways, plastic made a big appearance. That's right, plastic. We don't usually associate this everyday synthetic with high fashion, but many designers explored plastic as a staple material in their accessory design, and some even used it in their outerwear. If you take a closer look back at the spring 2013 slideshows, you'll notice plastic on the runways of numerous designers, from Michael Kors to Valentino. Plastic is a polarizing trend, so click through and decide whether or not you'll be in the clear for spring.