9 of Barry Keoghan's most daring looks, from colorful suits to a designer harness

Designed by Louis Vuitton, his baby-blue suit and matching undershirt made for the perfect monochrome moment.

His top also featured a high neckline that extended into a loose tie, adding another unique element to the outfit.

Another Louis Vuitton set, this outfit included a lilac jacket, pleated trousers in the same shade, and a white button-up with a matching bow tie.

The most distinctive part of the outfit, however, was the row of buttons on his jacket. Each was shaped like a wispy flower with diamonds in the center.

He wore the gray harness atop a white silk shirt embroidered with the Louis Vuitton monogram and black pants that subtly featured the same logo.

Keoghan completed the designer outfit with black-and-white Louis Vuitton sneakers.

Burberry designed the black-and-blue, tartan-print suit and his matching, high-neck undershirt,

Keoghan wore the outfit with square-toe dress shoes and two statement pins. One was shaped like a flower, while the other was a diamond-encrusted safety pin with a blue rose attached.

Keoghan was photographed at the event wearing a matching houndstooth-print set.

It included baggy pants, a puffy zip-up jacket, and white sneakers.

He sported a white button-up shirt with the sleeves rolled to his elbows, black trousers, chunky boots, and a black leather vest. The look was designed by Givenchy.

For accessories, Keoghan wore only a silver watch.

Designed by Givenchy, his two-piece outfit featured an olive-green vest and pleated pants in the same color.

The actor wore the top with seemingly nothing underneath and accessorized with a thin chain necklace.

Keoghan wore a red Louis Vuitton suit covered in a subtle checked pattern and a white button-up top.

But his accessories — a pearl chain across his pocket, a matching necklace, a diamond pin, and a ruby earring — stole the show.

His stylist Ilaria Urbinati described the look to British Vogue as being "'Saltburn' meets punk rock."

Stella McCartney designed his black-and-white ensemble.

It included wide-leg trousers, a cropped blazer, and a ruffled undershirt that was visible through his jacket's deep neckline.