Hi all, my sister who is a Permanent Resident, filed a form I-130 to sponsor her unmarried biological daughter. That case is currently waiting for a visa to become available. However, the adult child beneficiary recently gave birth. How to add the baby as a derivative beneficiary in the petition. I need help to do it. What form I need to fill out to add the baby and how much is the fee for adding the child? Any input are really appreciated.