You’ll find them on most strapless bridal gowns, if the style allows for it, but you wont see much mention of them online.
I haven’t been able to find any tutorials, no explanation, just the occasional reference on a bridal site. Sometimes they’re wrongly called a waist stay, other times I’ve seen them called an elastic bustier, but Juliet strap is what we call them, and its less confusing. The manufacturers who make our dresses for us (I work with a bridal designer) have never been confused when we asked for a Juliet strap in a dress.
Its a wide strap of elastic thats sewn into the side seams and has a closure like a bra band. I’ve seen them up to about 8 inches wide, the one in the picture is about 3.
What does a Juliet strap do? It holds the front of the dress to you! If its wide enough, it will also act as a bit of a corset.
The strap helps hold the front up, and against your body. And keeps the movement of the front to a minimum. If you’re worried about a dress falling down, or not giving enough support in the front, its an easy alteration that will improve the fit. however, It works best with boning.
It would be the perfect addition to a bunny suit, or strapless dresses like Neo Queen serenity.
Before and after of the Serenity dress I purchased on eBay. I glitzed up the top with some rhinestone trims, removed the bow to make room for some wings I made, and ripped out the zipper for a lace up back (no one can seem to wrap their heads around my waist-to-hips ratio like yes I have a booty pls accommodate it). Also not seen: I added a loop of trim under the train so I can pick it up while walking so it doesn’t get too gross. I’m actually done with this a week early. Yay me! (This is for Sat of Metrocon)