Woohoo! That's awesome!
And I'm sure I'm not the only one who wants to see a photo of you in this dress! Are you going to oblige us?
My feet have shrunk a bit too - I've gone down a half size to a size, depending on the shoe, and no longer need the wide width versions. I do think that carrying around so much weight flattens out your foot a bit and as the load lightens, your feet return to their natural, smaller state. But I don't know if there are facts to back up that belief.