Round Nails

Definition: It mirrors the contour of the nail with a circular edge at the tip. "The tip of your nail is filed like the arch of a perfect circle," explains Miss Pop.

Bottom Line: Anyone looking to elongate fingers. "[It makes] them look more narrow and makes wide nail beds appear thinner," says Nuñez.

Wear It With: Any shade will really do

Oval Nails

Definition: "It is natural looking, but gently filed in on the sides to elongate the nail, and it can give the illusion of making your finger look longer. Perhaps this is in part because, to achieve the shape, your nail must grow slightly beyond the fingertip," says Miss Pop.

Bottom Line: "An oval shape nail is very feminine," says Lippmann. "Perfect for experimenting with trending colors."

Wear It With: Along with bold and unexpected shades, this shape is great for metallics and reds.

Square Nails

Definition: "Filed straight across the top, with flawless 90 degree angle sides," says Miss Pop. "I always associate this shape with nail queens Gwen Stefani, Missy Elliot, and Dolly Parton. It’s their go-to file. I’d also add that this shape is very popular on the West Coast."

Bottom Line: If you have narrow nail beds and slim fingers, this is the perfect shape for you. "I classify it as a modern shape and it seems to have appeal among younger people," says Choi.

Wear It With: "Beautiful solid dark colors lend this shape a cool trendy feel," she says. "Geometric and negative space nail art work well [with] this shape too."

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