The World War Two epic is the movie acting debut for One Direction star Harry Styles, who was joined by Prince Harry on Thursday night in London to see Nolan's highly anticipated film.
In character: 'Chris kind of creates this world view where you don't have to act that much.
The One Direction star who makes his Hollywood debut in the Christopher Nolan film that comes out in the United Kingdom on July 21, also admitted that he obsessed about how well he did after auditioning.
In a recent interview with Entertainment Weekly, Nolan stated that he kept Styles out of trailers for Dunkirk because he didn't want to accidentally over-exaggerate his presence in the film. I feel very lucky to be a part of Dunkirk.
Explaining the thinking behind cutting off his famous signature mid-length hair, he said: 'I think I assumed I was going to need a little trim if I was doing this film.
"I'd do this one again but it may be one and done", he's reported as saying.
Harry wasn't the only cast member to suit up for the premiere, with Cillian Murphy donning a charcoal number and pale blue shirt, while Mark Rylance sported a black three-piece outfit with matching trilby when he stepped out onto the blue carpet.
It happened at the at the "Dunkirk" premiere at the Odeon in Leicester Square.