If you're on a thrifty budget, this fe-fe Belt will fit the bill. It's a foolproof choice, while not very costly.
If you're willing to splurge, we recommend checking out this Co Belt - a great luxury choice. While you're at it, also have a look at this Oscar de la Renta Belt. Yes, this item is expensive, but it does not mean it's not worth it. And how about the luxurious Moschino Belt? Yolo, right?