Right, now that it is infinitely preferable to repair clothes you already have rather than throw away and buy new, you'll be needing this BRASSERIE REPAIR OUTFIT
Basically it's a new catch and clip that you can sew on to replace a broken one.
Or use to make an existing strap a bit longer.
The colour is TEA ROSE
The complete thing (both sides together is 11cm long and 1.7cm wide.
It's made from COTTON, RAYON, RUBBER, STEEL
So will do its job admirably.
And it was, of course, MADE IN ENGLAND
The price is for one "Snug Bra" ..but I do have a couple of boxes of 36 (as shown in the photo) - for those of you that make 1940s displays..or films.
Or have a lot of bras.