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

Please read the description.

outfit1
1girl, solo, long hair, pink hair, hairclip, bangs, pink eyes, school uniform, pink bow, white shirt, collared shirt, long sleeves, grey skirt


Recommended prompt
1girl, solo, long hair, pink hair, hairclip, bangs, pink eyes, dress, mini hat, idol clothes, stage

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