As these side-by-side shots show, two women wearing the same dress happens a lot in the real world--sometimes it even happens on the same night. The Dress Registry is a service that aims to cut down on the frequency with which dresses are duplicated by allowing divas to register their gala gowns online before the event.

Users simply search for their event, adding it if the gala isn’t already listed, and then add their dress. The Dress Registry has a database of dresses, and registered users can see the color, cut, style, UPC and style numbers, and other dress details. There are even pictures of the dresses available to make your choice crystal clear to fellow event attendees.