I actually think thats a mamianqun worn sideways, judging from the thin pleats and large pleats on the sides. Its not an incorrect way to wear it and was actually very common during some dynasties. The red robe also looks like Zhijupao.
Wait, what? I just checked and all 3 voice actresses (appear to be) are just fine & healthy.
This post was dedicated to Yamashichi who was known for loving the Taiyou-class Escort Carriers. This also explains why Hi Ye used their abyssal counterparts as she loves abyssals.