Tee shirts advertising the 12-12-12 date sit on display at A Little White Wedding Chapel, Tuesday, Dec. 11, 2012, in Las Vegas. These once-in-a-century wedding dates have become more important each year as people increasingly look outside Vegas for nontraditional weddings. Once known as the wedding capital of the world, Vegas&#x27; share of the U.S. wedding market has fallen by a third since 2004. (AP Photo/Julie Jacobson)
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