Those boots and hat trump the Tshirt any day!
Heh, last Christmas (I gave you my heart - erm no), I was still working in Norway. The Norwegians don't do "extrovert", they're all a bit reserved. So I loaded up a suitcase full of Christmas costumes and forced them to wear them when we went out on the office bash. Fully equipped as an elf, a Christmas pudding, a snowman (with the carrot nose), Mrs Christmas, Little Miss Christmas - appropriately on a really fit colleague with a short skirt, a reindeer and Father Christmas.
We went to the best pub in Stavanger, Cardinal, and as I was friendly with the bouncer they let us in as they "don't usually permit fancy dress."
I was so impressed that they actually did it that I spent a fortune and got them all deliciously pissed