Eggywegs

Can anyone please give advice, we are an Australian couple looking to get married on a trip to the USA in October. There will only be the 2 of us, but we'd like a beautiful ceremony - money is not really an issue seeing as there will not be any guests! I am also looking to hire a wedding dress, can anyone tell me approximately how much this will cost? Again, I don't really mind the cost, as long as I like the gown. Thanks