I love this dress, and I hate both 1) polyester (oh, sorry, "Crimplene") and 2) purple, so you know this is true love.
This is from a site with the punning name "Beehive Yourself," and I think it might be Australian, which makes the pun make more sense, because try to say that in a fakey Aussie accent. No, go ahead, I'll wait. See? Click the image to see all the gory details (unless you are too busy STILL saying "beehive yourself" in that "no, THIS is a KNOIFE" accent).
Anyway, the designer, Prue Acton, was Australia's Mary Quant. You see, kids, before the Internet, each widely separated geographical area … ah, never mind. Now I wish I had a search tool that would let me search [name of place]'s [name of famous person] to see how many funny combos I'd get. I'd also like to see dresses from Japan's, Bulgaria's, and Canada's Mary Quants! Any help?