Paul Mescal and Andrew Scott attend London's Gladiator 2 premiere

Irish actor Paul Mescal channelled suave sophistication in a loose-fitting Gucci tux on the red carpet of the Gladiator 2 premiere in London.

Styled by Felicity Kay, the Maynooth man wore high-waisted boxy suit trousers with a silk lapel suit jacket and an open collar white shirt.

Mescal, 28, finished the look with an undone white tie, and a Cartier watch. Grooming was done by Knight Josh and Dani Kleinman.

Mescal’s cool, calm style has become his signature in recent months.

Frequently sporting a loose unbuttoned tuxedo, with an open collar and a distinct lack of neckwear, the star looks as though he’s just returned home from a red carpet as opposed to stepping onto one.

Both Mescal’s Sydney and Dublin Gladiator 2 premieres shared this laid back style philosophy.

In Australia, the star wore a rust-coloured Gucci three-button tuxedo over an open collar light yellow tunic.

In Ireland, Mescal sported a monochromatic Gucci ensemble with a similar white neck tie hanging loosely around his neck. The Irish star frequently wears the Italian fashion label on red carpets, dressed once again by celebrity stylist, Felicity Kay.

Mescal was joined on the London red carpet by his sister, Irish singer Nell Mescal, who wore a drop-waist cream sequin dress from Self-Portrait.

The 21-year-old singer finished the look with brown patent Mary-jane heels.

The Mescals were not the only stars to turn heads this evening. Co-star Pedro Pascal, 49, followed suit in loose fitting high-waisted trousers and a black open collar shirt with embroidered rose detailing on the lapels.

The Narcos actor opted for no blazer, bringing some heat to the chilly red carpet.

Pascal’s sister, Lux Pascal, 32, also showed some skin in a daring Stephan Rolland velvet cut out gown with emerald buckle detailing.

The Gladiator 2 star assisted his wife with her dress’s long black train.

Denzel Washington also took to the carpet in a classic slim-fitting black tux with black and white sneakers.

Unlike his co-stars, the 69-year-old actor sported a slim black tie in his ensemble.

Irish actor and past co-star of Mescal, Andrew Scott, 48, wore the biggest knitwear trend of the season in a shimmering blue and charcoal argyle cardigan.

The Fleabag star finished the look with tapered suit trousers and a pair of Gucci loafers.

Irish singer Una Healy, 43, also sported sparkles in a Nadine Merabi shimmering gold dress with long sleeves, a high leg slit and plunging neckline.