Create a large female Ragdoll cat with a muscular yet soft appearance, having a thick and silky coat of purely white fur, and striking green eyes that are almond-shaped and slanted upwards, giving the cat an endearing and gentle expression, with a full body shot of the cat sitting upright on its hind legs, with its front paws tucked in and its tail wrapped around its body, wearing a delicate diamond collar around its neck that sparkles with intricate details and shines with a bright luminous glow, against a simple and neutral background that allows the cat to be the main focus of the image.