Dressing like a clown

My daughter just came into my room very proudly because she just dressed herself. However I had to try not to lough at her.... Her outfit just did not match at all. She was wearing a long sleeve shirt with hearts with a checkered sleeveless summer dress over it. And also was wearing a bright pink sweat pants underneath her dress...... I was trying to make her change but she insisted that she looked pretty and did not want to change. Since she is still only 4 years old, I figured that if she is happy just let her go out like that.... plus this might give her a chance to be a very creative individual!