I absolutely swear by these guys: Wiesn Tracht & Mehr. Go to the shop in Tal and ask for Daniel, mention the Americans who bought the Tracht for the absent youngest son for the older son's wedding.
Mr. Brain, you being dark yourself I would recommend dark-ish pants, possibly with colored embroidery. You can get away with it. And please, not a gunny-sack shirt with huge, unmotivated buttons. White or chequered are the only options.




