rei no serafuku
A sleeveless microdress, visually similar to a serafuku, that is completely open in the front, with cross-laces connecting the two sides of the "shirt". The "skirt" appears to be a microskirt, but as the "skirt" and "shirt" are actually a single article of clothing, it is actually a microdress.
The outfit also includes wrist cuffs and a choker. Common, but not universal, elements of the outfit include thighhighs, white panties, and a generally blue or purple color scheme.