We understand that finding the right fit for your little one is essential for their comfort and happiness. That's why our baby clothes are designed to fit true to weight, ensuring a snug and comfortable fit. Cotton does shrink after the first machine wash/dry so we account for this shrinkage by cutting our clothing slightly longer than intended, so that they shrink down to the correct size. As such, we do not recommend sizing up unless the wearer is extremely tall/large for his or her size. If you find that you like the length of the garment prior to washing it, we recommend line drying to retain that length. Otherwise, feel free to pop it in the dryer to shrink it down slightly to its intended fit.