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 10 of 15 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 10 Sept. 18, 2015 Gwen enjoyed herself on stage during the Kaaboo festival in Del Mar, CA. And we enjoyed her flawlessly classic beauty look. Previous Next Start Slideshow Gwen StefaniCelebrity HairCelebrity MakeupCelebrity BeautyBest Of 2015