The fashionable couple attended the film festival to promote George Clooney's coming film, "Jay Kelly."

The actor wore a classic navy suit, a navy tie, and shining black dress shoes.

Amal Clooney, on the other hand, made a statement in pink. Her Tamara Ralph couture gown was strapless, covered in sequins across its bodice, and lined with fringe across its tiered skirt.

She accessorized it with silver sandals, diamond earrings, and a pink feathered coat.

She promoted her latest movie, "The Testament of Ann Lee," while wearing a black-and-white design from Richard Quinn. Though the strapless piece was pretty, its mix of velvet and tulle fabric overwhelmed the petite actor.

The gown's bodice, which was corseted and decorated with a white rose, also recalled prom styles.

Seyfried wore the dress with a straight hairstyle, a diamond necklace, and open-toed Aquazzura heels.

She wore a white Chanel gown that was sleeveless and made from satin.

It had knotted details across the hips and one shoulder, as well as a flower embellishment attached at the waist.

The gown was pretty, elegant, and accessorized perfectly with diamond earrings and an updo hairstyle.

Fanning stars in "Sentimental Value," which was screened at the London Film Festival.

So she walked the red carpet in a two-piece set from Simone Rocha that undoubtedly made a statement. Unfortunately, it wasn't a great one.

The outfit included wide-leg trousers beneath a sleeveless, sequin-covered gown, and strappy black sandals. It overpowered her and looked heavy.

The ensemble would have been more effective if the dress had been lifted at the waist, as it was on the brand's runway, or worn without the pants entirely.

Ahead of a "Wake Up Dead Man: A Knives Out Mystery" screening, the couple walked the red carpet hand in hand.

Weisz wore a black suit that was perfectly tailored to her measurements, pointed leather boots, and a white blouse that added a bit of contrast to her dark outfit.

Craig chose a more colorful look. He paired a gray suit with a baby-blue button-up top and a red striped tie.

Their outfits were simple, but effective.

He attended the film festival to support his friend, Paul Mescal, and his coming movie "Hamnet."

That said, Keoghan didn't dress for the occasion. Instead of wearing a suit, he donned baggy blue jeans, chunky white sneakers, and a blue pullover sweater.

Swapping his casual denim for black trousers could have vastly improved the look.

While promoting "Bugonia," Stone walked the red carpet in a custom gown from Louis Vuitton.

The sleeveless design was solid in color, straight in design, and backless. It perfectly complemented the red color and short style of her hair.

Stone wore it with delicate jewel earrings and a matching scarf wrapped around her arms.

She walked the red carpet to promote "Wake Up Dead Man: A Knives Out Mystery."

However, her appearance wasn't too memorable as a result of her overly simple gown.

The black, strapless design had an extra-short sequined bodice and a floor-length skirt that puffed around her legs.

More tailoring and some statement jewelry could have improved the understated outfit.

Garfield often walks the red carpet in modern outfits that are tailored to him perfectly. This Valentino look he wore for the "After the Hunt" screening was no exception.

It included black trousers with a slightly flared shape, a black blouse with a bow neckline that was left untied, and a gray tweed blazer.

His leather shoes and gold ring made the outfit appear even more luxurious.