If you're budget-restricted, your best bet is this Dorothy Perkins Blazer. It's a terrific piece, while not very costly. Another strong contender for your wardrobe is this Daisy Street Blazer. While the price of this piece is rather reasonable, it will certainly attract a lot of attention. Or you can opt for this Naven Jacket. This item has all the potential to become a powerful player in your wardrobe.
If you're looking at it like an investment piece, then what you're looking for is this Vivienne Westwood Blazer Jacket. It's more expensive but worth your money. Another product we're drooling over is this Jacket. It's expensive but you get what you pay for.