Nothing toughens up silky fabrics like a bold knot. Whether you are going for a nautical look or dressing for a black tie event, a knotted detail usually adds the perfect touch of sophistication to a sandal. Knots also provide texture, which is especially beautiful on metallic or patterned fabrics. Whether you opt for a dressy or casual shoe, a knot is a classic, yet modern detail that will definitely attract attention.

"Nappa Delave Platform Sandal" by Prada. $590, Saks 5th Ave.

"Unika heel" by Boutique 9, $149.99 at Heels.com

Check out the fabulous collection of Boutique 9 shoes on sale at Heels.com.