What is the average jean size for a 15 year old girl?

There is no one definitive answer to this question, as the average jean size for a 15 year old girl can vary depending on a number of factors, including her height, weight, and body type. However, some general guidelines suggest that the average jean size for a 15 year old girl is between a size 0 and a size 6. It is important to note that this is just a general guideline, and the actual size that a 15 year old girl needs will vary depending on her individual measurements.