*scratches head*
Erm, seems I kinda forgot about this task...
Here are two my proposals:
1st one. Classic. Ideal for a good-looking bartender. Black fancy pants, polished black suede shoes, snow-white silk elegant shirt. Additionally - a leather belt with many small pockets - perfect for keeping tips! And a tricorne hat, to reflect the tavern spirit!
2nd one. I've seen this style in a Tokunese tavern. Silk, silk, and silk some more. A long kimono, with tons of pockets, places to hide a knife or an axe. Whatever. Plus a white bandana, to keep hair in place.
Let me know of your choice. Or suggestions, if you don't like any of them.