Dreaming of a beautiful girl can have various interpretations depending on the context of the dream and your feelings during it. Here are a few possibilities:

1. Desire and Attraction: This dream could reflect your feelings of attraction or desire for someone in your waking life. It might symbolize an aspect of beauty or connection that you seek.
2. Idealization: The girl may represent an ideal or aspiration you have. She could symbolize qualities you admire or wish to embody, such as confidence, beauty, or kindness.
3. Emotional State: If you felt happy or uplifted in the dream, it could indicate a positive emotional state or a desire for joy and love in your life. Conversely, if you felt sad or unworthy, it might suggest feelings of insecurity or longing.
4. Personal Growth: This dream might also signify personal growth or new opportunities. The beautiful girl could represent a new chapter in your life or the emergence of new potentials.

Consider how you felt during the dream and any personal connections to the girl you saw to gain a deeper understanding of its meaning.