What is good girl?

"Good Girl" can refer to a few different things depending on the context. Here are a few possibilities:

1. Perfume: "Good Girl" is a popular fragrance by Carolina Herrera, launched in 2016. It's known for its unique bottle design shaped like a high-heeled shoe. The scent is a blend of sweet and spicy notes, with tonka bean, cocoa, and coffee as some of its key ingredients.

2. Song by Carrie Underwood: "Good Girl" is a song by country music artist Carrie Underwood, released in 2012. It's an upbeat country-rock track that talks about warning a girl about a guy who isn't as good as he seems.

3. Books or Films: There may be books or films with the title "Good Girl," though they would vary in genre and storyline. When referring to media, checking specific details like the author's or director's name is important for an accurate reference.

4. General Term: "Good girl" can also be a term used in various contexts to describe someone (often a female) who behaves well or adheres to specific societal or cultural norms. It can sometimes be used in a patronizing or stereotypical manner, depending on the context.

If you were thinking of something else, providing more details would help in giving a more specific answer.