I bought one of my dresses from inweddingdress.com. I was leary at first but when I got it last week, I loved it!!!! First off I didn't know the dresses from China were Knock offs of the designers I just wanted an inexpensive dress. I must say that the quality of the dress is that of a davids bridal dress. I got a satin dress from them and it looks good.
Most of the things that we wear and use on a daily basis on made in China anyway so I figured what the heck! I'm not a label whore so it didnt matter to me who made the dress as long as it looked good, its for one day! So to answer the original question, I think it is fine to go with a dress from China! I had a great experience!