Ultramarine nails are becoming the ultimate in stylish. The blue-as-the-sea shade provides a lift to any ensemble, and is perfect for patriotic holidays and cold Winter days alike. In the past month alone, the cool hue has been spotted on stars from Christina Milian (left), Lily Cole (upper right), Emma Stone (lower right), and Whitney Port. And whether or not you choose to wear it with trendy blue hair, well, that's up to you.
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