Much as I despise this whole hysterical US-import, yet-another-excuse-to-sell-people-yet-more-cheap-uneeded-crap thing, I have to say that finding this picture of a prize-wining party-goer — all the way back in April 1894 in Covent Garden — dressed as a side of ham, almost* made me want to find a costume.
* Naaah, not really.