Second-Hand Wedding Dresses
If the budget is limited, then many brides opt for a second-hand wedding dress. Remember, it is likely that it has only been worn for one day!
Look online: there are many sites selling wedding dresses, either directly from the bride, via an agency or on auction sites.
Check what tailoring was done to the dress: something being sold as a size 12 may have been altered, or the skirt may have been taken up.
Look at bridal magazine forums and see if anyone is trying get sell their dress. Alternatively, post a request if you know what you're after.
Second-hand dresses are a good option for vintage-styled weddings.