Things need to get a passport for your baby...birth certificate, baptismal certificate, passport size ID picture, marriage certificate. Baby doesn't have to go for personal appearance. Only 10 yrs & above is required for personal appearance & interview of DFA. YOU as the mother should apply for the baby's passport. A lot of signatures needed from you as child's consent. The person who applied for the baby's passport is the only person who can travel with the baby. If you are married, marriage certificate is needed in DFA. If you are a single mom, make sure that there's no signature of acknowledgement of father in the baby's birth certificate...otherwise HIS consent is also needed.