Zac Efron Honors Matthew Perry at Hollywood Walk of Fame Ceremony

Zac Efron received his star on the Hollywood Walk of Fame on Monday, and during the ceremony, he honored his friend and '17 Again' co-star, Matthew Perry.

“I really also want to mention someone that’s not here today, and that’s Matthew Perry, who was so kind and generous with me while we worked on ‘17 Again’ together.”

He mentioned as well that working with Perry has motivated him in so many ways. "It really pushed me into the next chapter of my career and for that, thank you so much Matthew."