Gwen Stefani has long been a fashionable force in the music industry, and her beauty looks are just as important as the clothes she wears on and off the stage. She's channeling her rock star style into seven limited edition shades for the coveted nail polish brand OPI. The brand's Executive VP and Artistic Director Suzi Weiss-Fischmann was inspired by last year's Punk: Chaos to Couture exhibition at the Metropolitan Museum of Art and called on Gwen to give the salon polish a authentic touch of edge. The classic red shade, Over & Over A-Gwen, also comes in a boxed set ($15) complete with Swarovski crystals, metal studs, and nail glue, so you can create custom nail art designs. All the single bottles will sell for $9. Scroll through to see all seven shades, which hit shelves next month!