Popsugar Beauty Celebrity Beauty Gwen Stefani's Natural Hair Colour Is Darker Than You Think Gwen Stefani Has Been Platinum For Decades, but Do You Know Her Natural Hair Colour? 9 September 2019 by Sarah Siegel View On One Page Photo 4 of 15 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 4 Gwen Stefani With Dirty Blonde Hair While performing with No Doubt in 1989, Stefani had dirty blonde hair. Previous Next Start Slideshow Celebrity BeautyBlond HairHair ColourCelebrity HairGwen Stefani