If you've got Scottish blood and find yourself in dire need of the lowland "tuxedo" of your native land, all you need to do is call Barbara and Charlene McGowan and schedule a visit to their in-home shop in Arlington. Their kilts, commissioned from a kilt-maker in Scotland, are the real deal and come with all the accessories--the sporran (leather purse) and the sgian dhu (the small dagger traditionally worn in the sock). The entire outfit can run as high as $1,000, but who's counting? In business since '91, the McGowans annually hold a July 1 bash to commemorate Scotland's repeal of the ban against kilts back in 1782, serving up food from the homeland and a contest to determine which kilt-wearer has shown up with the best knees.