Black Blazers from Nordstrom Rack
If you don’t want to splurge, this Topshop Double Breasted Blazer will fit the bill. It's a great choice, while not very expensive. Another strong contender for your wardrobe is this Double Breasted Blazer. While the price of this product is rather reasonable, it will definitely attract a lot of attention. You might also want to consider this Ted Baker Double Breasted Blazer. The price is very reasonable, but the effect on your wardrobe will be pretty fantastic.
If you can afford to spend a little more, consider this Muu Baa Blazer Jacket. While the price is very reasonable, this piece is an easy wardrobe update. It's also worth considering this Haute Hippie Blazer Vest. This product is extremely popular and, just as importantly, not very expensive. Alternatively, opting for this Haute Hippie Blazer Jacket is a great choice as well!
If you're not the one to skimp on clothes, then what you're looking for is this Veronica Beard Blazer Jacket. It's more expensive but worth your money.