Are Olivia and Jaden friends?

Tons of celebrities were on hand to collaborate Kickin' It star Olivia Holt's Sweet 16 party at Greystone Manor in West Hollywood, CA, including one surprising guest- Jaden Smith! "I've actually known him since I was about 12 years old," Olivia tells J-14. "He's good friends with my costar, Mateo Arias, so he comes to set a lot. He came with Mateo to my party."