I like the small details on clothes, I think the detail is the best way to establish how expensive something is. I love the blazers worn by the men pictured above, and the coat with leather sleeves. Ok so they're not small details but they are details nonetheless, and designers add detail to their garments to justify their expensive price tags (solely my view); simply using the brand name is just seen as tacky now.
The next best thing after detail is the quality and fit, but ultimately the defining point is the way in which the item is worn. A well dressed man or woman can perfectly deceive the naked eye into believing that they are dressed in the finest attire. The woman in the top right image is a model modeling a look by an up-and-coming designer called Laend Phunkit.