A highly detailed and ultra-realistic portrait image captures a young, slender woman with defined abs and a flat chest, wearing elegantly crafted medieval armor that accentuates her midriff. She is gracefully posed on horseback, bathed in the soft glow of golden sunlight within an expansive open field. The intricate details of the armor are meticulously depicted, highlighting its craftsmanship. The scene is rendered in stunning 10k resolution, showcasing vivid realism and attention to detail.