Whether you need it for a Halloween or just a regular costume party, pulling together a wedding dress costume should be easier and less expensive than finding the real thing. By using your ingenuity and objects you may have already on hand, you can create a wedding dress costume in no time, and without paying pricey costume-rental fees.
Visit your local thrift store or Salvation Army. These types of places often sell older wedding dresses at a price that won't kill your budget. As the styles are often well out of date, you may be inspired regarding the accessories for the rest of the outfit.
Purchase or borrow some costume jewelry to match your dress. Go big on the ring, just for fun! Costume jewelry can also often be found inexpensively at your local thrift shop, but if you want to purchase it new, many stores specialize in fake jewelry for special occasions like the prom. Check your local mall for options.
Tie some fake flowers together with a ribbon for the bouquet every bride needs. Using fresh flowers is more expensive, but will look more elegant if that's the type of bride costume you are trying to create.
Create your own veil using several yards of inexpensive tulle if you don't have access to a ready-made one. Fold the tulle in as many layers as you want (more layers means a fluffier veil) and gather the tulle at the top. Run a thread loosely through it with a needle. Tie the thread off at one end and hot-glue the gathered end to a comb, clip or headband. Cut any folded pieces of tulle at the bottom of the veil. Fresh or fake flowers make a good substitute in the absence of a traditional headpiece.
Layer on the makeup. Whether you are going for an over the-top-look or a classier one, the occasion will call for more than your everyday makeup style.
Remember the little accessories that may not get seen, but which help you get into character, such as a garter and "something borrowed, something blue." Oh, and don't forget the groom!