Zac Efron: 'New Year's Eve' at STK

Zac Efron continues work on his upcoming film, New Year’s Eve, on Friday (February 25) in New York City.

The 23-year-old actor, who’s been busy filming the romantic comedy with co-star Michelle Pfeiffer, signed autographs for fans when he left the set.

The night before, Zac enjoyed a guys’ night out at STK, where he arrived around 10 p.m. and snacked on the restaurant’s “lil BRGRs” until midnight.

Zac didn’t drink, but he and his two pals “looked like they were having a great time taking a load off,” sources told HollywoodLife.com.

FYI: Zac wore a Diesel “Wurra” jacket.

10+ pictures inside of Zac Efron on the New Year’s Eve set…