Zac Efron: Birthday Party at The Box!

Zac Efron gives a big laugh as he leaves The Box nightclub with some friends early Friday morning (October 21) in London, England.

The 24-year-old actor celebrated his birthday this past Tuesday – he turned 24! Happy birthday, Zac!

Zac has signed on for an upcoming not-yet-titled comedy opposite Seth Rogen.

Seth spoke to MTV about the surprising reason Zac became involved with the film.

“He was really looking to be sullied, which is why we thought it would be a good idea,” Seth said, “He seemed like he was a really cool guy, that he’d be fun to work with and seemed that he was capable of much more than the Disney stuff we’ve seen him in.”