Justin Timberlake knows how to treat his fans right, the 33 year-old singer was recently playing in front of a sold-out crowd at San Jose, California's SAP Center stadium when he suddenly stopped the show to sing ‘Happy Birthday’ to an 8 year-old boy, Julian Delan, who is autistic.

Justin Timberlake
Timberlake, along with the 25,000 attendees, sang 'Happy Birthday' to Julian

Timberlake led the 25,000 concertgoers in the sing-along, and Julian’s father, Peter Delan, and mother, Marika Rosenthal Delan, shared the extraordinary event in a YouTube video, which shows the excited young fan shouting, "This is my birthday present!"

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Marika recalled Timberlake’s heartfelt gesture in a blog that was posted on the website The Manifest Station, and revealed how her son’s constant screaming urged fans around them to catch the attention of the ‘Suit & Tie’ singer. After finally noticing, he then began to sing ‘Happy Birthday.’

“And at the perfect quiet moment, the group in front of us started yelling to get Justin's attention, because despite his loud volume, Julian's voice was not carrying. Only repeating," Marika wrote. "And then before we knew what was happening, the group in front of us that had turned out to be so incredibly kind all night to our birthday boy, and these gorgeous girls who I was convinced would be totally annoyed by Julian, had captured Justin's attention."

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“And then it happened,” she added. “Justin Timberlake was singing Happy Birthday. They all were.”

Julian’s proud mother also uploaded a snap to Instagram of him posing with a huge smile on his face. “On this day we celebrate you. We love you, Julian AND we love YOU Justin Timberlake !!! thank you for making his birthday SO special!!!” the caption read.