I started seeing a lot of good BangDream art lately. Is it that popular?
Aside from what MistyWanderer said, the new (and very anticipated) season started airing on January 2nd, so there's definitely even more art being posted than there already was.
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.