I realize New York is a different world and boutiques are a different world within that different world but still: "What is UP with stores...now only putting sizes S and XS out on the floor? Really?....Do I really have to ask for help if I want something that will fit my giant, medium-sized ass?"
These labels simply don't want their clothes seen on anyone other than a XS, right? Bad for the brand image. Probably, also, they lack the skills to design and cut a garment for anyone other than a stick figure but mainly, they've chosen to cater only to the XS as if that alone will create instant cache. It might work.