I spent some time in both the Air Force Reserve and the Washington Air Guard. I can recall being issued a Kaki uniform that consisted of shorts w/stocking that came up to the knees, a bush jacket and pith helmet as a tropical summer uniform. I thought that was a little strange.
In looking at the pictures of the high collar belted blouse, I wasn't impressed. Indeed it looked like something out of the WW I era. I just can't imagine why anybody would choose this blouse for a dress uniform. I didn't like the loose material at the belted waist much either! At least the WW I blouses were worn with a leather 'Sam Brown.'