Zac Efron 'starstruck by Posen, Rose'

Zac Efron was reportedly left starstruck at a recent event in New York after spotting designer Zac Posen and model Amber Rose.

According to the New York Daily News, the Me And Orson Welles star was amazed to see the pair during his appearance at the Cinema Society opening of the period drama.

The 22-year-old is alleged to have stopped in the middle of an interview with reporters when Posen walked past him.

He allegedly also stopped speaking when he spotted Rose and was overheard saying: "Amber Rose is here? I just can't believe she's here."

Efron and Rose - the girlfriend of Kanye West - later posed for photos together at the Gramercy Park Hotel's Three Olives event that evening.