Art style: Retro Storybook Illustration.
Full-length view, the entire figure visible from head to feet, standing upright, a five-year-old girl centered on a sunlit summer railway platform with green trains and warm morning light filling the sides. She is a lively fidgety little sister with a round, rosy-cheeked face, big bright curious hazel eyes, a small upturned nose and a wide gap-toothed grin. Fair skin and light-brown hair in two neat braids tied with red ribbons, short wispy fringe. Petite slender build, energetic springy posture — one foot lifted mid-hop, arms swinging, caught mid-giggle. She wears a cheerful yellow sundress with tiny white polka dots, short puffed sleeves, white ankle socks and simple red buckled shoes. A small cloth shoulder bag hangs at her hip. Playful, mischievous, joyful expression, restless childlike energy.
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FINAL STYLE ENFORCEMENT (this is the authoritative rendering directive — it overrides any style wording elsewhere in the prompt):
Render this image entirely in "Retro Storybook Illustration" style. Match the lighting grammar, material response, colour science, level of realism / stylisation, line weight, and shading model typical of "Retro Storybook Illustration". Keep the subject, composition, camera angle, lighting direction, and colour palette from the description above — but EVERY surface, skin, fabric, material, and environmental element must be rendered in the "Retro Storybook Illustration" idiom, not in any other medium.
