I have to say these brands do not seem to have landed on liquidators or wholesale suppliers YET, since most of the sites I got on are retailers or authorized distributors for these companies. There are several urban clothing suppliers from our directory but they do not have these upcoming brands that you prefer.
I have seen an affiliate site on Crooks & Castles Link hidden: Login to view
and that's the most I can give for now (me cry).
Sorry that I wasn't able to provide much help.