Is onlineformals.com a reliable site?

I almost ordered my wedding dress from a knock off site and soon realized that every dress that I was a fan of were from different knock off sites as well. I really want a Alfred Angelo 2005 but its discontinued and I haven't found it in my size in any stores. The nearest Alfred Angelo store is three hours from me and they said there's one in their warehouse but it would be almost 600 dollars. The one on onlineformals.com is only 400. I'm just really scared of ordering from them and recieving a dress that is a cheap imitation of the real thing. Are they reliable?