I can't find the original listing for this, I am assuming it is sold out/possibly the brand Eieyomi on Taobao due to the closest dress I could find being one that is very similar to it (last photo) but lacks the top piece

worn before, and has some fading due to it

It is Size XL, since I cant find the size chart I am just going to list my measurements: Bust: 37.5 IN - 82CM
wast: 30 IN - 79CM

and it fit me well enough.