A beautiful young woman, athletic, sweaty, with her hair tied up in a tight bun

a beautiful young woman, athletic, sweaty, with her hair tied up in a tight bun, wearing brightly colored MMA fighting gear, fighting in an octagon fighting ring, viewed from a low angle outside the ring, masterpiece, (best quality, 4k, 8k, highres, ultra-detailed, realistic, photorealistic:1.37), professional studio lighting, physically-based rendering, extremely detailed description, vivid colors, sharp focus, octagon MMA fighting ring, athletic woman MMA fighter, tight bun hairstyle, colorful MMA outfit, low angle outside the ring, dynamic action pose