Overview
- Elgort shared a black-and-white portrait with his baby boy and called fatherhood "exhilarating" and "exhausting."
- He wrote that sleepless nights have left him feeling stronger during the day and that his son's emotions have freed him to express his own.
- The actor posted a video of himself singing to his son, which prompted a heart-eyes emoji comment from co-star Shailene Woodley.
- He has not identified the child's mother, following January 13 sightings in New York City with a mystery woman carrying the newborn.
- Outlets had circulated TMZ photos of Elgort spending a day with the baby last month, but he formally confirmed the news today.