extremely attractive 50 years old woman, short blonde hair, chin-lenght hair, bobcut hairstyle, she is swimming in an olympic size pool, she is doing the, ((butterfly stroke)), (very big natural breasts:1.8), her natural breasts sway and bounce with her movements. underwater view, Create smooth, natural, cinematic motion without warping or deforming, Avoid adding artifacts, hallucinated objects, extra limbs, or distortions or unattached body parts. Produce a cohesive animation with stable details, consistent textures, and clean frame transitions.