I got inspired and drew a sketch of my idea for the kacabajka and the OUATITW blouse. It's kind of my re-imagination of the 1848 Czech national costume... not entirely period correct, but in the same spirit. A 21st century Czech national costume, so to say.It's just a quick and rather messy sketch I made on a train, but for such, not bad at all. :D
EDIT: I added the Research tag, for my comments below.