I'm a big sister: A child eagerly welcomes home her new baby sister. -- I'm a big brother: A child eagerly welcomes home his new baby brother. -- The baby sister: When he learns that his mother is going to have a baby, Tommy is very excited and hopes that the baby will be a sister. -- Hi new baby: A father recalls his young daughter's first reactions to her new baby brother. -- Hello baby: A young boy describes how a new baby is growing inside his...