"I'm sure it'll turn up in a bag one day!"

By Meghan Overdeep

Nearly 40 years have passed since the world watched Lady Diana Spencer leave St. Paul's Cathedral as Princess Diana, and images of her wedding dress remain scorched in our collective consciousness.

The ivory taffeta gown featured intricate embroidery, antique lace, 10,000 pearls, and a jaw-dropping 25-foot train. Although voluminous by today's standards, the gown remains one of the most iconic wedding dresses in history.

It's common knowledge that designers Elizabeth and David Emanuel also made an exact duplicate of this dress to be displayed at Madame Tussauds. But very few people were aware that the husband and wife team also made a third, super-secret backup dress in case of an emergency, like, for example, the designs of the first dress were leaked to the public.

Elizabeth Emanuel revealed the truth about Diana's clandestine third dress in a 2011 interview with People. The ivory silk taffeta gown reportedly had the same ruffles around the neck as the original, but without its signature lace.

"We didn't try it on Diana. We never even discussed it," recalled Emanuel. "We wanted to make sure that we had something there; it was for our own peace of mind, really."

Emanuel revealed even more about the mystery dress to the Daily Mail in 2017. "It was only three-quarters finished," she said. "We simply didn't have time to make it in its entirety, so none of the embroidery or finishing touches were done."

And that's not all. Emanuel also admitted to the Daily Mail that she has no idea what became of the third dress. She said it hung in their studio "for a long time," and then simply vanished.

"I don't know if we sold it or put it into storage. It was such a busy time," said Emanuel. "I'm sure it'll turn up in a bag one day!"

A bag!? *clutches pearls*