Zac Efron wore earmuffs to keep warm while filming outdoors for his project Are We Officially Dating? yesterday in frigid NYC. He also shot scenes in a coffee shop, where he warmed up with a beverage. Although Zac was solo on set, he has been spotted shooting romantic scenes with his costar Imogen Poots recently. Earlier this month, Zac and Imogen shared a kiss while in front of the cameras together. Along with work on his latest project, Zac can be seen in the recently released trailer for his upcoming movie At Any Price. Zac shares scenes with Dennis Quaid in the film, which premiered at the Venice Film Festival last August and will have a limited release on April 26.