I am so glad i read the other reviews and paid attention to the description. The size in the label is deceiving, especially the head piece. Even though i did get the right size to fit my son, the head piece is still looks small. My son doesn't have a big head, the head piece is going to be tight even though the rest will fit him just right. I also didn't expected when i open the package is that there are two pieces to this costume. The head piece is separated, this is not a one piece costume, and the material is really thin. The baby will definitely need to wear a onesie or something else underneath.