Anne Hathaway flaunted her long legs at the premiere of her new film Eileen at the 2023 Sundance Film Festival on Saturday.

The 40-year-old actress strutted the carpet in a sensational black mini dress as she posed up a storm for the cameras at the event, which was held at the Eccles Center Theatre.

Her dress of choice sported a faint checkered design that was formed out of lace material and had a semi-sheer back, which she was happy to show off.

Leggy: Anne Hathaway flaunted her long legs at the premiere of her new film Eileen at the 2023 Sundance Film Festival

She paired her all-black ensemble with tights, laced-up boots, and a large puffer jacket.

The Les Miserables actress had her brunette hair styled in a windswept look and kept her makeup very natural with simple eyeshadow and light red lipstick.

For accessories, the beauty sported a small purse, a small gold necklace, gold hoop earrings, a silver bracelet, and several rings.

Little black dress: The 40-year-old actress strutted the carpet in a sensational black mini dress as she posed up a storm for the cameras at the event

Sultry: The bombshell sported a small purse, a small gold necklace, gold hoop earrings, a silver bracelet, and several rings

The Oscar winner was joined on the carpet by her costar Thomasin McKenzie, and the two looked very friendly as they shared some laughs and posed together.

Thomasin donned an all-black ensemble, save for the white collar on her oversized blazer.

She kept the blazer buttoned over a black dress that cut off at her mid-thigh and wore a pair of black tights underneath.

The 22-year-old also wore a pair of black lace-up boots with a silver buckle and kept her accessories to a minimum, with only a simple pair of pearl earrings.

Dazzling: The beauty flashed a bright smile as she was interviewed on the carpet

Chilly: Earlier on she bundled up in a black puffer jacket to brave the cold

Her short blonde hair was slicked back and pushed to one side, and for makeup, she went with a light smokey eye.

The costars were joined on the carpet by other members of the cast and the creative team; most donned in black.

While walking the carpet, the cast and crew took part in several interviews about their upcoming film.

Eileen was adapted from the breakout debut novel by Ottessa Moshfegh and is an offbeat period noir about a young woman working in a Massachusetts prison.

Lots of laughs: Anne and Thomasin McKenzie looked very friendly as they shared some laughs and posed together

Team: The costars were joined on the carpet by other members of the cast and the creative team; all donned in black

Happy face: The Les Miserables actress kept her makeup look very natural with simple eyeshadow and light red lipstick

Creative minds: Ottessa Moshfegh and Luke Goebel co-wrote the script for the film. The director William Oldroyd posed with Thomasin on the carpet

Thomasin stars as the titular Eileen and Anne as the prison guard femme fatale she becomes entangled with.

The film was directed by William Oldroyd (Lady Macbeth). The script was co-written by the book’s writer Ottessa Moshfegh, and Luke Goebel (Causeway).

It was produced by Anthony Bregman, Stefanie Azpiazu, Peter Cron, as well as Luke, Ottessa, and William.

Alongside Anne and Thomasin, Eileen also stars Shea Whigham, Marin Ireland, and Owen Teague.

Pose: During the festival Anne also found time to pose for a chic photo shoot

Stunner: The stunner slipped into a black bodysuit which hugged every inch of her incredible figure

Look: She completed the look with an oversized plaid shirt

Boots: She added height to her frame with a pair of chunky black boots with intricate laces

Pretty: Thomasin’s short blonde hair was slicked back and pushed to one side, and for makeup, she went with a light smokey eye

Chatty: She joined in on several interviews as she walked the carpet

Getting excited: Eileen was adapted from the breakout debut novel by Ottessa Moshfegh and is an offbeat period noir about a young woman working in a Massachusetts prison

When discussing the film with Vanity Fair, Anne shared how difficult the film was to categorize and how, when the time came for the first rehearsal, she was still trying to figure it out.

‘As you can imagine, over the course of the past however many decades, I’ve read a number of scripts,’ she said.

‘But I had to sit with this one. I had to go back to it. I had to walk away from it. It kept revealing itself to me.’

Spread the love: Marin Ireland made an appearance on the red carpet for her film

Casual: Shea Whigham posed for some stoic shots before the film premiered

One big family: Alongside Anne and Thomasin, Eileen also stars Shea Whigham, Marin Ireland, and Owen Teague

Eventually, the actress and her collaborators settled on the most concise description to help guide them. ‘Carol meets Reservoir Dogs.’ She added: ‘But that helped!’

Both Anne and Thomasin got their start in film at an early age. The former having played the iconic Mia Thermopolis in The Princess Diaries films, alongside Julie Andrews.

Thomasin got her first major role in Jojo Rabbit, the Oscar-winning feature written and directed by Taika Waititi.

First look: Thomasin McKenzie and Anne star side-by-side in the new romantic thriller, Eileen