For the show, models wore French manicures: Gold Lamé as a base, with matte Black Velvet polish on the tips and Illusion d'Or as a topcoat. It was a gorgeous look, but for real life, we're absolutely smitten with Illusion d'Or. It's a translucent nail polish that blends tiny gold sparkles with hints of iridescence. The glitter effect is sophisticated — think stardust, not Studio 54. Worn on its own, it adds a subtle glimmer to nails. Layered over black polish, it is stunning. If you're going to splurge on one nail polish this season, this is the one.