Your best bet is to pay close attention to the reviews for the seller. Much like Amazon or Etsy or eBay, each seller is responsible for their store and the things they sell in it - which means some things are going to be fabulous and some won't be. So check the reviews and make sure you know that the seller you're trying has a solid reputation with their buyers and consistently delivers a good quality product.

Prom girl any store based in the US, Also Macy's and Jcpenny China makes prom dresses very cheaply made and store envy is fake.