A cute little girl cartoon character is running in a vector illustration with a black background. The style is simple and clean with simple facial expressions. She is wearing a bright and vibrant yellow t-shirt and green shorts and sneakers. She has brown hair in a ponytail and big blue eyes. Use flat colors for the characters with no shadows or gradients, just solid flat colors. The vector design is for printing on a shirt with an isolated element on a white background in a cartoon style.