akai haato (5th costume)
The fifth costume of hololive's Akai Haato, as seen in post #4169223. This is the outfit that is best associated with her Haachama persona.
It is a gothic lolita outfit (designed by Saba Mizore) consisting of a short red sleeveless layered dress with a black belt, black thighhighs a single legwear garter and black footwear lace-up boots, she often wears a black frilled capelet with a red bowtie and a long-sleeved, double-breasted black coat with a black skirt overskirt (although it's sometimes depicted as just a black dress and a red skirt.
Her official hairstyle with this outfit is very long hair in a two side up decorated with a small hair bow with a black rose, multiple hairclips and several heart hair ornaments.
This tag implicates akai_haato (learn more).