My fiance' and I are planning on having a zelda themed wedding.
This has been done before I am aware, but I'm having trouble locating a suitable dress/ dressmaker.
I don't want the typical cosplay zelda dress, I'd like the dress to be a little more formal.

Any information on acquiring realistic zelda type dress?

Try hyrule, I hear they have great dress makers,lol nah but seriously you might want to try a specialist dress maker if your after a varation either that or buy a cosplay and alter it would be my suggestion