well for my sisters wedding I want a dress.I think I schould rent but I think I schould buy.
You should buy one, but make sure it's one you'll wear again! Look around http://www.gatheringguide.com/ec/bridal_shops_dresses.html for ideas.
I think you should rent. I bought a dress for my sisters wedding and now I don't fit into it, and I don't know what to do with it.
renting is better because if you buy it you have no place 2 put it and yor only using it 1 time so that would be a waist of money.
Personally I own mine, but now I rent it out on rentnotbuy to try recover some of the cost