81st centile is still in the range for 'healthy weight.' Apparently 84th and above is 'overweight'.
DD is 2 years 8 months and a few months ago was on 59th centile for BMI. This is based on me measuring her at home (she enjoys to 'play' with scales & have her height measured, she is not aware what the information means) and using this calculator: www.webmd.com/parenting/raising-fit-kids/weight/bmi/bmi-calculator
DH and I are naturally short (5ft9 & 5ft 3.5 respectively), so I would not expect DD to be naturally tall.
I'm very concerned about her becoming overweight. She is looked after by relatives for between 2.5 and 4 days per week depending on my working pattern and I know that they do not feed her particularly healthily. I try to compensate when she's at home with no treats etc.
Am I right to be worried about her BMI at this stage?