She can dress or be whatever she wants because she’s about THE PIANO 🎹 and music. Yellow Star will always shine bright and BE a star.
It looks to me like she works out her antipode, the difficult White 11 Mirror, a chaotic, dissolving mind by playing as hard and crazy as she does. Many musicians HAVE to play music. They are driven to express their passion and magic or they’ll burst. She is that way.