Question
Why would a one-year-old girl have an abnormally large chest?
Answer
From the description, there seems to be no treatment needed. Should we provide any assistance? This should not be a problem; it might be that the baby is overweight. A slightly chubby baby can give that impression. Suggestion: If that’s the case, this is not breast development; it is quite different from normal breast development. If you are unsure, you can take a photo using a digital camera under ample natural light and send it over.