If you're lucky enough to have a dazzling ring on your finger, you might as well show it off with a perfect manicure. For Kate Middleton's wedding, doing that means wearing custom-blended nail polish. Manicurist Marina Sandoval created an off-white hue for Kate's manicure, using colors including Bourjois polish in no 28 Rose Lounge and Essie 423 Allure. (Sadly, she didn't give all of her secrets away.) As soon as we see Kate's ring, we'll offer ideas for similar shades — just in case you, too, have some jewelry to show off.