How many actors do you know of who are front and centre on their own poster in their acting debut? Especially in a supposedly ensemble film?

Things are different when you're Harry Styles, of course. The brand new poster for Christopher Nolan's World War II epic Dunkirk sees young Harry Styles emerging out of the water and being helped aboard, with fellow newcomer Fionn Whitehead alongside him. It's an interesting tactic, especially considering there's heavyweights like Mark Rylance, Richard Branagh, Tom Hardy, and Cillian Murphy all starring in the same film.

By all accounts and reports from on set, Styles was a consummate professional and seemed genuinely interested in the process - and auditioned just like everyone else.

Dunkirk hits Irish cinemas on July 21st.