Create a high-resolution digital artwork of a woman with wild, messy hair holding a steaming cup of coffee. She is wearing a loose, slightly disheveled shirt and has a look of tiredness mixed with a slight sense of alertness. The background should be simple and warm-toned, highlighting the character's disheveled appearance and the steam rising from the coffee. The style should have a painterly feel with vibrant colors and expressive details that emphasize the chaotic yet relatable morning scene.