It seems a little unfair. The ladies love blue eyes, and babies already have a cuteness advantage. The iris is the muscular ring around the pupil. And its color depends on a protein called melanin ...

Do you have blue eyes? We talked to experts to discover curious facts about baby blues, including whether your biological family is bigger than you ever imagined.

Go ahead and enjoy gazing into those baby blues (or greens, or browns …), but keep in mind that your newborn's eye color may not be permanent! There are no hard and fast rules, but a baby's eye ...