Create a high-definition image of a happy and smiling baby. The baby must have a realistic appearance and be well-proportioned, without having two heads or extra limbs, deformities in limbs, head, eyes, nose, etc. The baby must have a natural and happy expression on its face, with bright eyes and a visible smile. The image should have proper lighting and a resolution of at least 4K. Additionally, the baby should be in a safe and comfortable environment, such as a crib or a well-lit room, with appropriate infant accessories.