What average size waist of a 12 year old girl have?

According to the Centers for Disease Control and Prevention (CDC), the average waist size for a 12-year-old girl in the United States is 27.2 inches. However, it's important to note that this is just an average, and there is a wide range of normal waist sizes for girls of this age. Some girls may have a waist size that is smaller than 27.2 inches, while others may have a waist size that is larger.

If you're concerned about your daughter's waist size, it's best to talk to her doctor. They can assess your daughter's overall health and development and let you know if her waist size is within a healthy range.