weight 0.7 is best.
I created this LoRA as requested.

Please read the description.

outfit1
1girl, solo, long hair, multicolored hair, blue hair, pink hair, ponytail, sidelocks, bangs, horns, visor cap, pointy ears, earrings, red eyes, colored skin, grey skin, body markings, large breasts, choker, clothing cutout, one-piece swimsuit, wristband

I uploaded a sample image of the outfit as a post.

The tail is very uncertain. So I left it out of the prompt.