A beautiful, slim, suntanned naked woman with a toned, large, big trained curvy butt is on all fours on a towel on a sandy beach. Her head is lowered, her butt is raised, and her legs are spread apart, fully exposing her open pussy, (big labia, (and a perfectly defined clitoris), and a realistic anus that is slightly open. Rear view, with the composition centered on the ass, vulva, and asshole, ((asshole anal fully visible)), .Fully naked but visible thong tan lines. Her entire body is covered in oil, giving her skin an almost shimmering appearance in the sunlight. Ultra-realistic image with highly accurate anatomy.)