dear buyer :our size it is for height option,u can choose what height it is for your child,if 110cm,slim,u can buy 110cm,if a little weight,u can place 120cm,but sometimes,u have to add 110+10cm ,cuz maybe next year,u can wear itdear buyer :our size it is for height option,u can choose what height it is for your child,if 110cm,slim,u can buy 110cm,if a little weight,u can place 120cm,but sometimes,u have to add 110+10cm ,cuz maybe next year,u can wear itGirls Sequined Jazz Dance Wear Costumes Kid Cosplay setsGirls Sequined Jazz Dance Wear Costumes Kid Cosplay setsGirls Sequined Jazz Dance Wear Costumes Kid Cosplay sets