My daughter is 17 months old and she weight 8.7kg so is it normal or underweight and what can i do to increase her weight?

A. hi dear 2 to 5 year olds may be small, but they're growing and need the energy (calories) and nutrients that come from a varied and balanced diet. If your child is underweight, they may not be getting enough calories. If you're concerned that your child is underweight or not growing normally, see a GP.