Nowa Sugaya - My Dress-Up Darling
Keep in mind that settings may vary slightly between different versions. See below for more details.
When I tested this with different checkpoints and LoRAs, it seemed to work quite well.
Illustrious:
A LoRA weight of 0.9 works great, though you can adjust the strength as you prefer.
Prompts I usually used:
nowa_sugaya, twintails, black hair, red hair, multicolored hair, grey eyes, school uniform, white collared shirt, rolled-up sleeves, black sweater vest, blue necktie, light blue skirt, pleated skirt, earrings, ear piercings,