No, not a 'Downton Abbey' costume. A Downton Abbey costume.

If I were going to try to make a creative Downton Abbey Halloween costume, I'd probably just put on a tie and a pair of driving gloves and then cover myself in blood and say I was the late Matthew Crawley. Though, I suspect that decision would come with a lot of confused looks and requests for further explanation.

Rob Cockerham had a much better idea. As soon as you see it, you know right away: that's a Downton Abbey costume:

Sources: Cockeyed | h/t Boing Boing