Maina ooizumi from idol sister. The first outfit (white jacket) is the most stable, the other 2 outfits aren't that stable due to low appearance in the anime / dataset size. You may need to tweak the negative prompt to get what you want. Cute girl, gentle, has big oppai, likes p*izuri, what else can I ask for ? Please Japan, make more girls like this !

maina ooizumi, brown hair, twintails, purple eyes, large breasts,

mini top hat, frilled hat, hat ribbon, red ribbon, white wrist cuffs, blazer, white jacket, white blazer, black lapels, double-breasted, black trim, short sleeves, dress shirt, white shirt, collared shirt, black necktie, striped necktie, white stripes, black skirt, pleated skirt, frilled skirt, bobby socks, white socks, mary janes,

dress shirt, white shirt, collared shirt, sleeveless shirt, pink panties,

blue dress, dress bow, blue bow, sleeveless dress, collarbone,

https://civitai.com/models/933950/maina-ooizumi