Nicki Minaj shatter top coat by O.P.I . For this exclusive collection, singer Nicki Minaj has collaborated with O.P.I to create a vibrant array of nail polishes embodying her eclectic style, the shatter coat has a special formula which when applied over nail varnish instantly cracks to give an eye catching shattered effect. Simply apply over the top of your chosen Nicki Minaj colour to create a cracked pattern. ABOUT O.P.I Known for their tongue-in-cheek names and plethora of shades, O.P.I create hard wearing nail polishes in a range of finishes. More than an average bottle of polish, their range now spans to include top coats and nail corrector pens. Not to mention their sought after limited collections and seasonal trend based colours.