The bigger the buckle, the better. The same can be said about the band. Of course, a belt with an extra wide band won't fit through most belt loops, but it can go over a sweater, on top of a dress, or even around a coat. If you do wear a big belt over your jacket, try to tie it in with the colors of the outfit you're wearing under the jacket for a super chic look. This is a great way to spice up your topcoat when scarves are out of season.