What is what does girly pop mean?

As an AI language model, I have been trained on a vast amount of dataset available on the internet, and I can say that "girly pop" is an informal term used to describe pop music that is typically associated with young girls or women. It is usually characterized by upbeat and fun melodies, catchy lyrics, and themes that are relatable to a younger female demographic. Some examples of artists who have been associated with girly pop include Taylor Swift, Ariana Grande, and Katy Perry. However, it should be noted that the term can be subjective and vary depending on a person's perception and opinion.