MiU (Jang You Sun) from Korean dance group WAVEYA.
Model of her sister Ari (Jang Eun Young) here.

If you want to say thanks, you can buy me a beer at: https://www.buymeacoffee.com/frozenviking

Prompt recommendations:
Add to the end of your prompt: 4K, 8K, hyperreal.
Negative prompts to use: blurry, jpeg artifacts, low resolution, anime, drawing, painting,