To be sure you are ordering the right size we suggest you refer to these general sizing charts. Measure your child's height, in Inches, and refer to the column "age" in the charts below.
Hopper Short Set
Soft cotton with a touch poly means it looks as good at the end of the day as it did in the morning (stains notwithstanding) and it still has the touch and breathability you want for little ones. White pique collar with hand embroidery. Sizes 2-3.