相羽ういは(通常)
The default costume of Nijisanji's Aiba Uiha, as seen in post #3581607.
It is an idol costume consisting of a double-breasted white dress top with puffy short sleeves and a blue feather accessory, a blue shirt underneath with a matching ascot, a frilled blue skirt with a blue flower, blue kneehighs, white shoes, white gloves, and blue hair bows.
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