Wearing White After Labor Day Is In Fashion: White shoes after Labor Day? Never. But like that sexy white classic sports car or precious heirloom strand of pearls, some white hot fashion accessories never go out of season. These days you can add a beautiful smile to that evergreen list of whites. But if you struggle to keep up with a teeth whitening regimen, porcelain veneers, the new trend in cosmetic dentistry will have you beaming in no time flat.