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

Please read the description.

outfit1
1girl, solo, long hair, blonde hair, ahoge, two side up, hair ribbon, animal ears, hair ornament, hairclip, purple eyes, fox tail, white dress, detached sleeves, black sleeves, black skirt, single thighhigh, white thighhighs

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

Due to the small number of images in the dataset, the character's clothing or pose may not be fully realized.