The first three outfits are official outfits and the other one is an outfit that show up in artist art displayed in-game so I say its fair game.

Appearance: altrento, long hair, large breasts, purple hair, red eyes, hair over one eyes, sidelocks,

Default Outfit: deftrento, long sleeves, blue hair, red belt, black thighhighs, white gloves, short black green and white dress, high heels, military uniform, black thigh boots, garter straps, yellow tassel, epaulettes, sleeve cuffs, aiguillette, medal, two-sided coat, grey strap going across chest, italian flag, thighhighs under boots, mole on thigh, red necktie, green and white coat,

Summer's Hotness: sumtrento, bare shoulders, blue hair, multiple bracelets, black choker, black o-ring bikini, halterneck, sunglasses, eyewear on head, wrist scrunchie, belly chain, mole on thigh, black high heeled sandals, multi-strapped bikini, side-tie bikini bottom, bead bracelet, black thigh strap, blue stomach ribbon,

Meta: metatrento, long sleeves, very long hair, white gloves, high heels, black short shorts, black thigh boots, garter straps, two-sided cape, black thighhighs, short black white and green dress, red necktie, green and red cape, headband, black belt with orange gem, clothing cutout on breasts, torn cape, torn white coat that only covers the shoulders, torn dress, shoulder armor,

HS Outfit: schtrento, black pleated miniskirt, blue hair, school uniform, white collared shirt, short sleeves, black necktie, see-through silhouette,