Zac Efron Was Hot & Sweaty for His Twitter Q&A Tonight (Photo)

Zac Efron gives a shaka sign while taking a break on the set of his movie We Are Your Friends on Saturday evening (September 20) in Los Angeles. The 26-year-old actor, who looked all hot and sweaty in the photo, was at his computer to answer fan questions during a Twitter Q&A session. “Thanks guys!