Ultra-realistic portrait of a 21-year-old female model. She has flawless, natural skin with a warm complexion, and bright, expressive emerald green eyes. Her hair is long, soft, and wavy, in a vibrant red color that catches the light beautifully. The model has a friendly and confident expression, with a subtle smile that reflects her youth and energy. She is wearing a simple yet elegant white t-shirt, complemented by a delicate silver necklace. The lighting is soft and natural, highlighting her facial features and the vibrant red of her hair. The background is a warm, blurred tone, providing a gentle contrast to the model's figure. Every detail, from the eyelashes to the skin texture, is captured with precision for an ultra-realistic effect