A close-up portrait of a young woman with a joyful, candid expression, captured as she laughs with her head slightly tilted. She has dark, messy hair with soft strands falling across her face, natural-looking skin with a subtle glow, and deep dark eyes. She is wearing a delicate necklace and a textured v-neck shirt featuring subtle patterns along the trim. The background is a warm, softly blurred outdoor setting with hint of greenery and a potted plant, creating a bright and natural atmosphere. Provide two versions of this image: in the first version, her shirt should be a soft, light pink color; in the second version, change the shirt color to a clean, crisp white while keeping her expression, hair, and the background completely identical.