Justin Timberlake cried after receiving the 'greatest gift ever' from a young fan.

The Mirrors hitmaker, whose wife Jessica Biel is reportedly expecting their first child, was spotted wiping away tears, after a 10-year-old boy presented him with a bow tie during his gig at the Barclays Centre in Brooklyn, New York, on Sunday - ahead of his 34th birthday on January 31.

After opening the package on stage, Justin said: "Hey man, greatest gift ever. A gentleman can never have too many bow ties."

The Not A Bad Thing singer walked away for a second to wipe his eyes, according to E! News, and then told the boy: "I might have to wear that on Christmas Day. I love you, kiddo."

After wiping his eyes again, he said: "St, that got me. You're the coolest dude here."

The former 'NSYNC star's bandmate Joey Fatone, 37, recently predicted he would be a great dad.

He said: "I think he's going to be a great dad. He's always been great with kids in general. He's going to be great. I think he'll be very hands-on."