yukiko (tesseract), hoshimachi suisei, hololive, official art, 1girl, :d, balloon, bare shoulders, blue dress, blue eyes, blue hair, blue nails, blue ribbon, blue sleeves, bouquet, breasts, card, confetti, copyright notice, crown, detached sleeves, double-parted bangs, dress, earrings, flower, frilled dress, frills, gold trim, hair between eyes, hair ribbon, halter dress, halterneck, heart balloon, holding, holding balloon, holding card, indoors, jewelry, medium hair, mini crown, nail polish, off-shoulder dress, off shoulder, open mouth, print dress, print sleeves, ribbon, side ponytail, sidelocks, small breasts, smile, solo, star (symbol), star balloon, star earrings, star in eye, starry sky print, symbol in eye, teeth, tilted headwear, upper teeth only, virtual youtuber