Excuse me, I couldn't help but notice your phrasing in that sentence. Are you asking if the statement "it's a girl" is correct? In the context of identifying the gender of a child or any entity, typically, "It's a girl" is grammatically and semantically accurate. However, it's important to clarify that language usage can vary depending on the social context and the intention behind the question. Is there a specific scenario you're referring to where you're questioning the correctness of this statement? Or perhaps you're seeking guidance on gender-neutral language practices?