If you're in a thrifty mode, this Federica Moretti Hat will fit the bill. It's a popular choice, while not very costly. In this price range, you can also look at this Rag & Bone Hat. It's also a popular item and won't break the bank. You might also want to consider this Unif Hat. The price is very reasonable, but the effect on your wardrobe will be pretty fantastic.
If you can afford to spend a little more, you're in luck with this Dondup Hat in stock and waiting for you. You are guaranteed to love this piece. It's also worth considering this Isabel Benenato Hat. This piece is ultra popular and, just as importantly, not very expensive. Check out this Borsalino Hat too! Great value for your money.
If you want to splurge, why not check out this Maison Michel Hat - a great luxury choice. While you're at it, also have a look at this Gucci Hat. Yes, this item is expensive, but it does not mean it's not worth it. You can also consider this Etro Hat. You won't regret the money spent!