Bambinata from Punishing Gray Raven.

original author: https://civitai.com/models/1847301?modelVersionId=2090546

Prompts:

mai_pgr_bbnt_ll, multicolored_hair, white_hair, black_hair, twin_braids, braided bun, fake_cat_ears, fake_tail, blue_tail, tail bow, mechanical_parts, mechanical_arms, doll_joints, black_leotard, white_dress, white gloves, white socks, black high_heels, stiletto_heels

Note: including descriptive for legs will tend to produce full-body image. Should that be undesirable, removing legs-related prompts can guide the model to make images more focus on the upper body.