This is so fun. All you shop-o-holics - go check this out.
I learned about Like.com, a product by Riya on my Robert's Shared Items Feed. He pointed to Somewhat Frank's piece on this. Read more posts on this here.
This is the basic summary of it - Like.com uses visual image recognition of photo's and applies them to clothing, bags, shoes...you name it. You can then shop for similar looking items.
Even more fun, check out the way they launched this product.