We are on a holiday in our native country. DD who is 4yr old is being extremely pampered by grandparents, uncles and aunts. The other day DD was hugging my sister and she suddenly blurted out "what are these big things?" referring to my sister's breasts. Since then she keeps asking my mum as well why she has big breasts. Is this abnormal behaviour for a 4yr old. Today she was looking at herself in the mirror and kept saying "mine ate tiny aunty has big ones". Her behaviour is driving me crazy. Am I overthinking?