Hélose sent me a link to this eBay auction — the picture is not of the best, but really, do you need to know any more than "1950's crossword-themed dress?" before you start mousing around for the "Bid" button?
It's 36-26(ulp)-39, and the bidding right now is about $25.
I can't tell if the buttons are little squares or not, but it looks as if they are. And it has pockets, to hold your pencils! What more could you ask?
Click on the image to visit the auction, as usual.