"I love what you are doing man", commented Kevin Hart. "HAPPY BIRTHDAY JADEN!" wrote supermodel Naomi Campbell, while other birthday wishes also poured in from Octavia Spencer, Vivica A. Fox, Lena Waithe, and Sophia Bush.
The I Love You Restaurant is one of many philanthropic efforts Jaden has contributed to.
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Jaden Smith set up shop in the downtown L.A. neighborhood and provided brown paper bags packed with food.
"I knew when I was carrying him [he'd be a star]", mom Jada Pinkett Smith says in a vintage clip.
Jada took to her Twitter to share the video dancing to the song in front of a statue of Jaden. "That's insane", Smith, 50, says in the video, which he titled, "I can't believe Jaden is 21?!?!" He also posted a picture of himself, posing with the food truck. "That was really important to me, that they understood that listen you guys are really privileged and you are to learn how to offer and offer yourself and be in service to the world", she added. "I'd happily come and cook there if you need me".
Much like Jada's video, Will's video was highly produced and was essentially a short documentary of the young musician's life - videos showed Jaden playing drums as a young tyke, skydiving, performing at Coachella and acting alongside his father in 2006's "The Pursuit of Happyness". Happy 21st to one of my dearest treasures. The equation still astounds me.