Last Wednesday my DD (aged 13) had a dr appointment. She had to take her top off for the dr, and the dr said "you're a big girl aren't you?"
My DD is a size 10 so she's not overweight. She is also around 5ft 5, so hardly tall/big.
I can only really assume that she was referring to her chest. She is definitely bigger than most girls her age and it does make her self conscious. Surely that would be a rather inappropriate comment for a dr to make?