Why don’t we have a National Costume?

Here’s a fun slideshow from Spiegel.de — you don’t have to read German to figure out that these are pictures of people partying at Octoberfest.  And according to the Economist (back in August), wearing tracht (traditional dirndls and lederhosen) is becoming increasingly popular, not just at Octoberfest, where we saw, seven years ago now, that it was quite common for young people to dress up for their night at the Wies’n, but for a wedding, or even at a night on the town or a visit to the biergarten. 

You know, I think we’re missing out.  We Americans have no national costume, nor even a regional costume (except for cowboy-type traditions out West).  We don’t have a folk dance (does Square Dance count?).  And we have very lame national or regional traditions (watching football games at Thanksgiving doesn’t count).