While we hear about statement shoes or the “It” bag of the season ... comes to the best women’s designer belts, it doesn’t get any more iconic than Gucci’s wide leather logo belt.

The buckle bag is everywhere—including on the arms of Dua Lipa, Diane Kruger, Chloe Sevïgny, and countless fashion editors.

Belts exist squarely at the intersection of function and style. Sure, they can keep a pair of too-large pants from sagging. But the right belt can also inject a dose of personality or whimsy into ...