A striking portrait of a young, slender woman with defined abs and a flat chest, donning medieval armor that elegantly reveals her midriff. She is posed gracefully on horseback, bathed in the warm glow of the soft golden sunlight in an open field. The image captures the delicate details of the armor with exceptional realism and intricate texture. The scene is rendered in ultra-high definition, showcasing the serene intensity of the moment. The landscape around her is expansive, with gentle rolling hills that complement the grandeur of her presence.