"You're 10, you've been watching me since you were two," he laughs.
Opening the gift to reveal a bowtie, the "Suit & Tie" singer gets choked up when the kid starts to cry. Watch the video above to see the sweet exchange for yourself.
"Hey man, greatest gift ever," he says. "Because a gentleman can never have too many bowties. ... I might have to wear that on Christmas day."
"I love you, kiddo," he adds, before needing to take a break. "S*it, that got me."
Perhaps Justin's reported new role as an expecting father is the reason for his emotional response to a young fan?
Timberlake's Sunday concert turned out to be a star-studded affair, with music superstars Taylor Swift and Beyonce caught dancing to his hit with Jay Z, "Holy Grail," in the audience. Timberlake also attended Taylor's 25th birthday party this past weekend, mingling with the likes of supermodel Karlie Kloss, Beyonce, Jay Z, Sam Smith and the HAIM sisters.