Why Harry Styles is such a gent?

Harry Styles, who is currently busy filming his upcoming war flick 'Dunkirk,' has jelled up really well with the entire cast and crew of the film.

Daily Mirror quoted a source, as saying, "Mark Rylance really gets on well with Harry. They have been known to enjoy a bottle of wine together some evenings when they aren't filming," reports Channel.24.

The insider added that the 'One Direction' singer is even loved by hair and make-up team because of his polite nature and in fact he once made a sweet gesture of thanking the entire catering department for cooking 'fantastic food' for him.

"The hair and make-up team love him too because he's very polite. One time he even made the effort to thank the catering department for making what he called 'fantastic food'. He's such a gent," said the insider.

It was also reported that Styles, who has huge fan following, has hired a personal 'full-time bodyguard' to ensure his safety on the sets of the movie.

On a related note, 'Dunkirk' directed by Christopher Nolan also stars Fionn Whitehead, Tom Hardy, Kenneth Branagh and Mark Rylance.

The movie, which is set in World War II during the Dunkirk evacuation, is slated to hit theatres on July 21, 2017.