If you are on a limited budget, this fe-fe Belt will fit the bill. It's a popular choice, while not very costly.
If you have enough to afford it, then you won't be disappointed if you check out this Co Belt. It's a costly but smart option. 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. Another nice option is this Moschino Belt. You won't regret the money spent!