full body head-to-toe standing pose, natural relaxed casual standing feet shoulder-width apart arms relaxed by sides neutral posture, 19 year old woman with long wavy blonde hair, blue eyes, defined jawline full lips mature facial features womanly proportions curvy hips voluptuous figure athletic toned body natural curves, wearing secure black string bikini top fully covering breasts tied properly matching bikini bottoms fully covering hips, standing by sunny poolside blue water tiled edge lounge chairs distant greenery, golden hour natural sunlight soft shadows, amateur iPhone raw unedited style slight grain realistic noise depth of field background blur, confident expression soft smile looking toward camera, lifelike skin texture detailed anatomy authentic photo quality