Create a highly detailed and realistic full-length image of a 20s Japanese woman

Create a highly detailed and realistic full-length image of a 20s Japanese woman with a model-like physique, smiling. She is wearing a vibrant blue dress. She has long, black hair. The background is a daytime park with a fountain visible in the background. Use 4K resolution to capture detailed textures and sharp details. Ensure the image is bright and colorful. The angle should be eye-level, and the shot type should be full-length.