If the dreamer is pregnant, and the daughter an as-yet unknown, this could be a sign that she is going to have a girl.
If you have a daughter, she is trying to communicate something to you but may be afraid to. Other symbols in the dream could shed light on what it is.
If the dreamer is neither pregnant nor the parent of a daughter, yet in the dream she has a daughter, this could indicate that the dreamer will start a new creative project soon.
If the daughter is pretty and happy, the project will be a success. But if the child is crying, the project will hit a lot of snags.
If the girl in question is the daughter of a celebrity, ask yourself what both the daughter and the celebrity mean to you. Look to other symbols in the dream to add further insight.