First I've ever seen the main body with its geta off...or wearing a sock.

Edit:At least two other Kogasa pics posted close to this one show some kind of sock on the main body. Perhaps I'm thinking of the traditional karakasa ghost, which is depicted without such. Any rate, I'm pretty sure this is the first time I've seen it wearing a tabi.

Most images of the karakasa has it drawn with the sock on. I don't think I've ever seen it without the sock.