A unique die-cut board book, perfect for kids wondering what's going on inside Mommy's pregnant belly! The perfect new baby book for big siblings, this fun board book makes for a great new baby sibling gift for kids ages 2-4. How Big is Baby Now? lets readers compare the growing baby to things kids already relate to and see all around them: from an egg, to a football to a jug of milk. Starting from three months, young children can count along as they anticipate becoming a big brother or sister. They are guaranteed to feel like they're part of the magic until it's time to finally meet the new baby! Our family is having a baby! Each month it grows and grows! How big is baby now?.