Now, tell me, would you do it?
Yes, I would. In fact, I almost did so at an event last year, and had the costume ready to go and everything, but had to abort at the very last minute, because it proved to be a little too hot to safely wear - don't use fleece for the shirt/robe, whatever you do! I almost passed out before I even got out of my hotel room.
Needless to say, I ditched the outfit immediately, and no passing out was done by me.