Lora for Topaz from Honkai: Star Rail. Weight of 1 should work fine, lower it if you wanna drastically change her appearance/outfit.

Trigger word: Topaz_HSR

For her outfit: Topaz_Outfit, bodysuit, white hair, multicolored hair, streaked hair, detached sleeves, button gap, hair ornament, white hair, blue eyes, black boots, black gloves, red cape, thigh strap, hip vent

You might have to put "pants" in the negative prompt if it gives her pants.