Create a photorealistic, 4K image of a female. She is 18, athletic

Create a photorealistic, 4K image of a female. She is 18, athletic, platinum blonde, small breasts, and has intense blue eyes. Her appearance looks a lot like a Nordic Emilia Clarke. She always has a wicked smile, like she has something naughty on her mind. She is in a royal blue bikini, next to a backyard inground pool. There is a party happening around her.