what bra size is normal for a 15 year old?
Still, from the studies done, it is not surprising that the average bra size for women in America is that of a 15-year-old, that is, a 36C. However, this does not mean that all 15-year old girls wear a 36C. Some, who may not have finished growing, may still have to wear bras in the A or B cup sizes.