Here's a breakdown:
* Stars: Representing something distant, unattainable, or even magical.
* Eyes: The window to the soul, reflecting what's going on inside.
So, the idiom suggests that the person is lost in thought, focusing on something beyond reality.
Here are some examples:
* "She has stars in her eyes when she talks about her dream of becoming a famous singer."
* "He looked at her with stars in his eyes, completely smitten."
It can be used to describe someone who is:
* In love: They see their partner as perfect and idealized.
* Ambitious: They are focused on achieving a goal, even if it seems far off.
* Naive: They might be easily fooled by promises or illusions.
It's generally a positive idiom, suggesting a sense of hope, excitement, or idealism.