Popsugar Beauty Gwen Stefani Gwen Stefani For OPI Collection See All of Gwen Stefani's Nail Polish Shades For OPI January 4, 2014 by Kaitlyn Dreyling First Published: December 30, 2013 View On One Page Photo 4 of 8 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 4 I Sing in Color Previous Next Start Slideshow Gwen StefaniBeauty NewsNailsOPICelebrity BeautyNail Polish