It’s all about the sparkle for 2011 as proved by the new Sephora by OPI Four Piece Full Size Nail Color Set ($28). This is a set of four must-have nail polishes for the holidays. Sephora by OPI Nail Color puts the final touch on fingertips and toes with top-quality formulas you have come to expect from OPI. The color Are You Glistenin’ is exclusive to this set. We bought two of the colors in this set in a Sephora store over the weekend (Sparktacular and Be-Clause I Said So). These colors are captivating in person. Wear these colors are their own or layer with a solid color underneath (it says “top coat” on the bottles that we bought).