A candid photo of a young woman inside a modern subway train, wearing a fitted white polo shirt, a short gray plaid pleated skirt, white knee-high socks, and a pastel pink backpack. She has light brown slightly wavy hair and fair skin with subtle freckles. Her cheeks show a natural blush as she looks to the side with a gentle, confident smile. The lighting is soft and natural, coming through the train windows, creating a casual and urban atmosphere. The image is shot at eye level in realistic iPhone photo style, with a soft depth of field, balanced tones, and an authentic city vibe.