Popsugar Fashion Alexa Chung Alexa Chung's Best Style 2015's Biggest Style Star Just Might Surprise You December 29, 2015 by Aemilia Madden View On One Page Photo 29 of 36 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 29 It's Perfectly Acceptable to Wear PJs Out and About Alexa wore a slip dress for Vogue's pajama party in May. Previous Next Start Slideshow Winter FashionSummer FashionSpring FashionAlexa ChungRed CarpetStreet StyleFall FashionBest Of 2015Celebrity Street Style