Hey Brieanna! I'm so sorry that you fell in love with a dress and are now finding it hard to track down! What is the dress like?
If you are thinking about getting a custom made dress, you should speak to your local seamstress. Either they will offer bespoke dress services or they will be able to recommend somewhere local that does custom dresses.
It's important to remember that getting a custom made dress means that you will not be able to try it on before it is completed. Have you tried on dresses of a similar style so that you know what it might look like on you?