DD has always been big and it is quite apparent that she is a lot fatter (or ''sturdier'' as DM says...) than her peers of the same age, but is about the same height as them. She is on the 99th percentile for her weight and it is difficult to accurately measure her, but I think she's about on the 75th percentile for her height.
Since a couple of weeks old she has remained on the 99th weight percentile (ebf for the first 6 months) but used to be on a similar length percentile. I don't give her junk to eat (no cake, chocolate, biscuits etc) but she does seem to eat larger quantities of food than her peers.
Do I need to worry? If she is overweight, I'd rather start tackling it now - any advice on how I do this?