DD2 has just turned 4 - I think she is quite big but she is 108cm tall and 16.5kg, DD2 was a smaller child but at 4 she was 106cm and 15kg

ETA - both girls are well within normal ranges for that age. There are 2 girls with an anglo mum and asian dad at school and they are MUCH smaller than my kids ie they are 6yo and smaller than my 4yo - but both parents are quite small themselves.