SIZING---- please see sizing chart in the listing photos to choose the best size for your little one. Baby sizes up to 18months do run a tad small, you may want to size up. Kids sizes run a tad big, I recommend sizing down if your child is petite. (Consider sizing down and purchasing the long option if your child is petite and tall) Long leggings are a custom option we provide for all our childrens leggings. If you select a long size your childs leggings will have additional length added to