Elton and David's Daddy Details

Elton John and David Furnish will reveal many details about the gestation, delivery, and first few months of life of their son, Zachary, on ABC's 20/20 Friday night.

John reveals that the two took their shirts off during the delivery and placed the newborn Zachary, born December 25, on their chests, according to People.

"They call it skin-to-skin bonding because it's such a traumatic thing for a baby to come into the world," Furnish told Barbara Walters.