Proud papas Elton John and David Furnish welcomed their baby boy, Zachary Jackson Levon Furnish-John on Christmas Day in 2011 via a surrogate. "I've never felt anything like it in my life," the superstar gushed to Us Weekly about what it was like holding his son in his arms for the very first time. "You're so awestruck. What can you say? You take it in. The feeling, the joy, the warmth of his body, his breathing . . . . I will never forget that experience, ever."