All of the instances of the outfit shown above are worn by Akane's BODY, but it's not Akane wearing it.
Except Akane does end up returning into the body while the outfit is still on:
For fanfic purposes, trying to collect all of Akane's outfits from the manga. This is gonna take a while.
Sunflower Blossom Yukata - Volume 16, Ch 09 (10) Decided to skip a couple of shots of doll-in-Akane's body revealing her half-naked body to get at Ranma.