Shortly after Billy's birth in 2017, Jimmy Kimmel revealed that his son had been born with a rare congenital heart defect and has given updates ever since.
Dr. Phillip Thrush promised Austin Eggleston - a die-hard Star Wars fan - that when a heart became available, he would deliver the good news wearing a Chewbacca costume.
One Virginia father is touching the hearts' of social media users after sharing a photo of himself posing with his young son who was born with a congenital heart defect.
Amari Hall, 16, was nothing but smiles after his successful heart transplant at the University of Maryland Medical Center.
Both Barack Obama and Hillary Clinton tweeted their support.
A Raleigh mom whose newborn is dealing with a similar health crisis says she was inspired to speak out after watching Jimmy Kimmel's emotional message about his newborn son, Billy.