Gwyneth Paltrow, 51, takes the plunge in revealing black cocktail dress as she leads stars at Boucheron NYFW event

Gwyneth Paltrow took the plunge in a revealing black cocktail dress at the Boucheron In America event for New York Fashion Week.

A parade of celebrities descended on Cooper Hewitt, Smithsonian Design Museum on Tuesday night to honor the jewelry brand.

The one who stood out the most was Gywneth, 51 years old. Her skin glowed despite her age as she walked through the party.

She opted for a dress with a neckline that fell far enough to show off not only her cleavage, but also a hint of her enviably slim waist.

She exuded classic style and completed her look with a glittering necklace and ankle-strap heels.

Gwyneth Paltrow took the plunge in a revealing black cocktail dress at the Boucheron In America event for New York Fashion Week

Paltrow, 51, exuded classic style, teaming the look with a glittering necklace and a pair of sky-high ankle-strap heels.

Paltrow, 51, exuded classic style, teaming the look with a glittering necklace and a pair of sky-high ankle-strap heels.

The Oscar winner accentuated her unmistakable features with makeup and tossed her signature silky blonde hair over one shoulder.

She was seen in the company of French billionaire François-Henri Pinault, the CEO of Boucheron’s parent company Kering and the husband of Salma Hayek.

Riverdale star Cole Sprouse, looking handsome in a black suit with a silver brooch, attended the party on the arm of his girlfriend Ari Fournier.

Ari, a model who has been in a relationship with Cole for more than three years, exuded old-school glamour in a long black dress with a seductively sheer bust.

Zola star Colman Domingo showed off his muscular chest in a semi-open silk top, paired with matching trousers and shoes.

Pitch Perfect 2 actress Hailee Steinfeld, meanwhile, made waves in a dress with slits, an extravagant train and raised shoulders.

The long-sleeved dress was reminiscent of old Hollywood, but was paired with a retro-chic hairstyle that looked straight out of the Swinging Sixties.

Alexa Chung showed off her long legs in a high-cut black mini dress that accentuated her hourglass figure.

She stood on high, open heels

She stood on high, open heels

Gywneth's complexion was radiant, skin that defied age, as she walked around the party

Gywneth’s complexion was radiant, skin that defied age, as she walked around the party

A glittering necklace rested on her collarbones

A glittering necklace rested on her collarbones

She was seen in the company of French billionaire François-Henri Pinault, the CEO of Boucheron's parent company Kering and the husband of Salma Hayek

She was seen in the company of French billionaire François-Henri Pinault, the CEO of Boucheron’s parent company Kering and the husband of Salma Hayek

Riverdale star Cole Sprouse, who always looked handsome in a black suit with a silver brooch, attended the party on the arm of his girlfriend Ari Fournier

Riverdale star Cole Sprouse, who always looked handsome in a black suit with a silver brooch, attended the party on the arm of his girlfriend Ari Fournier

Ari, a model who has been in a relationship with Cole for more than three years, exuded old-school glamour in a long black dress with a seductively sheer bust

Ari, a model who has been in a relationship with Cole for more than three years, exuded old-school glamour in a long black dress with a seductively sheer bust

Zola star Colman Domingo hinted at his muscular chest in a semi-open silk top, paired with matching pants and shoes

Zola star Colman Domingo hinted at his muscular chest in a semi-open silk top, paired with matching pants and shoes

Meanwhile, Pitch Perfect 2 actress Hailee Steinfeld made an impression in a slit dress with an extravagant train and lifted shoulders

The long sleeveless piece was reminiscent of old Hollywood, but was paired with a retro-chic hairstyle that looked straight out of the Swinging Sixties.

Meanwhile, Pitch Perfect 2 actress Hailee Steinfeld made an impression in a slit dress with an extravagant train and lifted shoulders

Alexa Chung showed off her dizzying legs in a high-cut black mini dress that also emphasized her hourglass figure

Alexa Chung showed off her dizzying legs in a high-cut black mini dress that also emphasized her hourglass figure

The strapless piece matched her tights and heels and provided an elegant contrast to her red hair, which she complemented with crimson lipstick.

The strapless piece matched her tights and heels and provided an elegant contrast to her red hair, which she complemented with crimson lipstick.

Polish supermodel Anja Rubik was a sight to behold in a backless top and a sheer skirt that left her black underwear clearly visible

Polish supermodel Anja Rubik was a sight to behold in a backless top and a sheer skirt that left her black underwear clearly visible

The lithe 5'10

The lithe 5’10” dresser further elevated her presence with a pair of towering stilettos and occasionally wore a baggy blazer

At one point, Ari, Cole, Gwyneth, Colman, Haile, Anja Rubik and Alexa Chung joined Mina Myoi for an unforgettable star-studded group photo

At one point, Ari, Cole, Gwyneth, Colman, Haile, Anja Rubik and Alexa Chung joined Mina Myoi for an unforgettable star-studded group photo

The strapless piece matched her tights and heels and provided an elegant contrast to her red hair, which she complemented with crimson lipstick.

Polish supermodel Anja Rubik was a sight to behold in a backless top and a sheer skirt that left her black underwear clearly visible.

The lithe, 5’10” coattails wore a pair of towering stilettos and occasionally added a baggy jacket.

At one point, Ari, Cole, Gwyneth, Colman, Haile, Anja Rubik and Alexa Chung joined Mina Myoi for an unforgettable star-studded group photo.

Mina, a Japanese singer who has become a star in South Korea, stood out in a black off-the-shoulder dress reminiscent of the 1930s.