There was no official name for this costume so this name is kinda madeup from me.
Source character design reference (not really this one but): https://x.com/animeshi_jp/status/1704435236703220183
Tags:
salt\(serafuku\), 1girl, animal ears, tail, purple hair, green eyes, thick eyebrows, solo, dress, cat tail, cat ears, full body, bright pupils, cat girl, dress, sailor dress, sailor collar, animal ear fluff, tail ornament, white beret, beret, thigh strap, miniskirt, detached sleeves, white thighhighs,
This model was trained with Nano Banana Pro generated images, and I intentially made her panty and stirrup with blue hemming. You can try generate with stirrup legwear if interested.
All maimai and maimai DX materials are Property Of SEGA