Julianne Moore stuns in a halterneck dress while braless Jessica Chastain turns heads in a backless top as they attend the Sustainable Fashion Awards during Milan Fashion Week

Julianne Moore and Jessica Chastain dressed to impress as they attended the Sustainable Fashion Awards during Milan Fashion Week on Sunday.

Actress Julianne, 62, looked stunning in a brown halter neck midi dress with a fitted knot at the waist.

The Still Alice star elevated her frame with a pair of matching pointed-toe heels and toted her belongings around in a black clutch.

Julianne accessorized her outfit with a pair of gold earrings and styled her auburn locks poker straight.

Jessica looked nothing short of sensational for the evening in a white backless top and black wide-leg trousers.

Looking good: Jessica Chastain looked downright sensational for the evening in a white backless top and black wide-leg trousers

Stylish: Julianne Moore (left) and Jessica Chastain (right) dressed to impress on Sunday as they attended the Sustainable Fashion Awards during Milan Fashion Week

Glamorous: Actress Julianne, 62, looked stunning in a brown halter-neck midi dress with a fitted knot at the waist

Glamorous: Actress Julianne, 62, looked stunning in a brown halter-neck midi dress with a fitted knot at the waist

The actress, 46, turned heads when she went braless in the jewel-detailed number.

She carried her belongings in a stylish red handbag and styled her long auburn locks in luxurious waves.

To accessorize her outfit, The Help star opted for a gold chunky bracelet as she posed up a storm on the red carpet.

In the meantime Olivia Palermo turned heads in a bronze cut-out pleated dress with a stunning high neckline.

The socialite, 37, put on a leggy show in the number with a daring thigh-high slit and added inches to her frame in a pair of gold metallic heels.

She carried her belongings around in a white handbag and accessorized them with some gold earrings.

Sadie Sink showed off her sensational figure in a glamorous pink satin dress with a stylish wrap slit at the side.

The Stranger Things star, 21, added inches to her frame with a pair of black pointy heels and stashed her belongings in a matching clutch.

Amazing: The Still Alice star elevated her frame with a pair of matching pointed-toe heels and toted her belongings around in a black clutch

Amazing: The Still Alice star elevated her frame with a pair of matching pointed-toe heels and toted her belongings around in a black clutch

Incredibly, the actress, 46, turned heads when she went braless in the jewel-detailed number

Sensational: She lugged her belongings around in a stylish red handbag and styled her long auburn locks in luxurious waves

Incredibly, the actress, 46, turned heads when she went braless in the jewel-detailed number

Participate: Sadie Sink was also present at the event in Milan on Sunday evening

Participate: Sadie Sink was also present at the event in Milan on Sunday evening

Beautiful: the Stranger Things actress attracted attention in an elegant pink evening dress

Finish: She completed her look with backless black heels and a matching clutch

Beautiful: the Stranger Things actress attracted attention in an elegant pink evening dress

Daring: Meanwhile, Olivia Palermo turned heads in a bronze cut-out pleated dress with a stunning high neckline

Daring: Meanwhile, Olivia Palermo turned heads in a bronze cut-out pleated dress with a stunning high neckline

Bold: The socialite, 37, put on a leggy show in the number with a daring thigh-high slit and added inches to her frame in a pair of gold metallic heels

Turning heads: Bianca Balti wowed in a sassy, ​​sheer black dress that she paired with matching long gloves

Bold: Olivia (left), dressed in a leggy display in the number that featured a daring thigh-high slit and added inches to her frame with a pair of gold metallic heels, while Bianca Balti (right) stunned in a racy, sheer black dress and matching long gloves

Dressed to impress: the model showed off her sensational figure in the daring outfit to which she added a bralette with silver chain across the top and a pair of chandelier earrings

Dressed to impress: the model showed off her sensational figure in the daring outfit to which she added a bralette with silver chain across the top and a pair of chandelier earrings

Wow: Actress and model Hari Nef was also present, who left little to the imagination in a silver dazzling see-through dress that she combined with nude heels and large earrings

Wow: Actress and model Hari Nef was also present, who left little to the imagination in a silver dazzling see-through dress that she combined with nude heels and large earrings

She dressed up with a chunky jeweled bracelet and a pair of statement pink earrings.

Sadie styled her long auburn locks in a neat updo and applied a beautiful makeup palette, including a black smoky eyeshadow.

Also in attendance was American actress and model Hari Nef, who left little to the imagination in a silver, dazzling, see-through dress that she paired with nude heels and large hoop earrings.

Bianca Balti wowed in a sassy, ​​sheer black dress that she paired with matching long gloves.

The model showed off her sensational figure in the daring outfit, to which she added a bralette with a silver chain across the top and a pair of chandelier earrings.

British Vogue editor-in-chief Edward Enninful looked dapper in a black three-piece suit and white open-collar shirt.

He attended the event with model Adut Akech, who put on a very leggy show in a black halter dress.

Smart: British Vogue editor-in-chief Edward Enninful cut a dapper figure in a black suit as he posed with model Adut Akech, who put on a very leggy show in a black dress

Smart: British Vogue editor-in-chief Edward Enninful cut a dapper figure in a black suit as he posed with model Adut Akech, who put on a very leggy show in a black dress

Friends: Jessica later posed with actor and longtime friend Jeremy Strong, who looked dapper in a navy blue suit and orange bow tie

Friends: Jessica later posed with actor and longtime friend Jeremy Strong, who looked dapper in a navy blue suit and orange bow tie

Is called!  Jessica smiled as she showed off her amazing figure in the backless number

Is called! Jessica smiled as she showed off her amazing figure in the backless number

Wow: TikTok star Meredith Duxbury turned heads when she showed off her toned midriff in a busty black cut-out hooded dress

Stylish: Bianca looked sensational as she posed on the red carpet

Wow: TikTok star Meredith Duxbury turned heads when she showed off her toned midriff in a busty black cut-out hooded dress

Dazzling!  Actress and model Diana Ghenea made sure all eyes were on her in a silver tassel midi dress which she paired with pink metallic knee-high boots

Dazzling! Actress and model Diana Ghenea made sure all eyes were on her in a silver tassel midi dress which she paired with pink metallic knee-high boots

Dramatic: Model Coco Rocha stunned in a gold satin dress which she paired with a matching sequined hooded cape

Dramatic: Model Coco Rocha stunned in a gold satin dress which she paired with a matching sequined hooded cape