An official costume of Honkai: Star Rail's Herta, as revealed in the 2.6 Special Program. Later revealed to be the actual 5-star playable "Emanator of Erudition" version in the 2.8 patch.
It consists of a black witch hat (or sun hat) with a purple inner brim, black detached collar with a white ascot, strapless black dress with long detached sleeves, x hair ornaments on her locks, grey pantyhose, and purple-black gradient uneven boots (ankle-length on her left but knee-length on her right).