photography, 1girl, 20 years old, a monochromatic sepia-toned portrait of a cute and silly girl wearing a white collar shirt, loose tie, whimsical, her expression is playful with a silly grin, showcasing her fun and nerdy personality, her eyes are wide and sparkling with mischief, her hair is styled in a slightly messy yet charming way, background is simple, keeping the focus on her expressive face and delightful details, sepia tones give the portrait a warm vintage feel, sharp focus, 8k resolution