Register for gifts at idofoundation.org, and participating stores will send rebates to your favorite charities. Or register at justgive.org for charitable gifts instead of china.

Buy your gown at bridalgarden.org, a designer boutique run by a nonprofit, Sheltering Arms Childrens Services, in New York City. When you’re done, donate it to makingmemories.org, and the proceeds will benefit breast-cancer research.

Donate centerpieces to a hospital and those bridesmaids’ dresses to glassslipper project.org, which passes them on to would-be prom goers who can’t afford the finery. And congratulations!