Since the feature patch of April 15, 2014, there is the success style icon in the game. In this success, you have to collect 1,000 unique skins for the wardrobe. For this you get the title Fashion Collector .
This guide is meant to help you get some of these unique skins as cheaply as possible. This is where Karma Traders, Armor Dealers, and Personal History sections are listed, giving you special skins.