A stunning portrait of a young, slender woman with a toned physique, wearing intricately designed medieval armor that reveals her midriff, gracefully posed on horseback in an open field bathed in soft, golden sunlight. The armor glistens, exhibiting exquisite detail and craftsmanship. Her expression is serene and confident, complementing the natural beauty of the landscape. The image is extremely realistic, captured in ultra-high 10k resolution, meticulously highlighting the nuanced textures of both the armor and the horse. The atmosphere is enchanting and ethereal, with a perfect blend of artistry and realism.