I purchased these here and dressed my boy-girl twins in them a few times. The size is 50-60, and they fit from newborn to about 3 months old. The photos are from when they were about 2 and a half months old. Both have milk stains on the collar. The pink one also has stains around the stomach area. I haven't washed them with Utamaro or anything, so the stains might come out with washing.