nail polish

Marko Metzinger/Studio D

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Knockout Nails
You might not think you're ready for turquoise matte nails this summer—neither did we—but when we tried KO Cosmetics polish in Pool ($19;, we were glad we took the plunge. The polish comes in 12 other richly pigmented—and matte—shades, from a sweet pink to a playful Kelly green. If you're feeling conservative (but still want to make a splash), try the ultraglam, femme-fatale Karen red.