I just stumbled upon this very sharp looking photo from 1934 Japan. Here is a link to it and a blurb from that page:
Tokyo 1934 • Modern Obi
This photo, taken in Tokyo in May 1934, shows two girls wearing a kimono, and two more girls wearing western style clothes, one of them a middy suit and a hat. The girl with her back towards the photographer is wearing an obi (the beautifully decorated sash used to tie the kimono) which must have been quite modern at the time.