Thought I'd pass this on since most of us are wanting whiter teeth before the big day and this will do it faster than the OTC stuff, but isn't expensive. It's an online deal so you buy the Groupon and then order it from the company's website and they ship it out to you and you use it at home.
http://www.groupon.com/deals/premium-home-whitening-new-york?utm_campaign=UserReferral&utm_medium=email&utm_source=uu202791