(from behind, close up from below:1. 9), a slender lanky tall (extreme skinny:1. 9) (extreme anorexic:1. 4) (extreme emaciated body:1. 5) nude 100 meter female runner is in the starting position before the race, (18 years old), (slim prolong legs:1. 3), (hands on ground:1. 8), naked, nsfw, Photorealistic, high detailed, high quality, ultrarealistic, RAW, 8K, highly detailed, sharp focus, Realistic photo, white hair, ponytail, very long hair, light brown skintone, (hyperdetailed skin:1. 2)