Works fine with ~0.65-0.8 weight, but test which is best for you
SOME ISSUES:
When using other clothes, a collar might appear on her. Can be fixed with lower weight or negative prompts for collar, choker, halterneck etc.
Character prompt:
osthorai, long hair, hair flower
Outfit prompt:
cleavage, cleavage cutout, china dress, chinese clothes, green dress, sleeveless, shawl, high heels