Photorealistic image of a 25-year-old woman with long wavy blonde hair, fair skin, blue eyes with subtle makeup, seductive teasing expression with slight smile and half-closed eyes gazing at camera, wearing a red triangle bikini top with thin strings tied at neck and back hugging large natural breasts, matching red triangle bikini bottom with side ties hugging hips, posed sitting on a white sandy beach with legs extended straight forward slightly spread, right arm bent with hand on knee, left arm supporting behind on sand, body leaned back slightly arching to emphasize cleavage and toned abs, background of turquoise ocean water, blue sky with clouds, natural sunlight casting glossy sheen on skin and bikini fabric, hyper-detailed hair shine, string ties, and sand textures, best quality, masterpiece, 8K resolution, sharp focus, sensual beach mood., (leaning-back leg-extended pose:1.5), (red triangle bikini attire:1.3)