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.

Since melanocytes respond to light and babies are in the comfort and darkness of the womb, they have little melanin, and therefore mostly blue eyes when they're born.

When my daughter turned two-and-a-half, I realised that her eyes were starting to shift away from the baby blues she was born ...