Photo: Getty

It’s safe to say Justin Timberlake’s just made this boy’s year.

Watch above as JT, along with 25,000 fans, sing happy birthday to eight-year-old autistic boy, Julian.

To say he’s ecstatic is an understatement!

Want more? Here's one of our fave moments from Jase & PJ – they’re always up to something! Weekdays from 6AM on KIIS 101.1!