Popsugar Beauty Gwen Stefani Gwen Stefani Beauty Style 2015 15 Times Gwen Stefani Proved That 2015 Is Her Prettiest Year Yet December 28, 2015 by Lauren Levinson View On One Page Photo 15 of 15 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 15 Nov. 18, 2015 The pop star proved a red lip can always dress up jeans and a ponytail — even to an event as fashion-forward as this Barneys one in LA. Previous Next Start Slideshow Gwen StefaniCelebrity HairCelebrity MakeupCelebrity BeautyBest Of 2015