Natasha Lyonne and Sienna Miller ooze Manhattan style at the opening of Caviar Kaspia

Natasha Lyonne and Sienna Miller ooze Manhattan cool as they attend the star-studded opening of Caviar Kaspia

Natasha Lyonne and Sienna Miller oozed the cool of Manhattan on Friday night when they attended the opening of Caviar Kaspia at the Mark Hotel in New York City.

Lyonne, 43, wore a leopard print jumper and a spectacular studded black coat.

Miller, 41, covered her white dress with a black coat and made her lips pop a crimson color, matching her bright red heels.

Sienna arrived without her dapper boyfriend of 25 years, Oli Green, who recently accompanied her to Paris Fashion Week.

And Natasha was all smiles as her career continued to grow, with her new show Poker Face garnering critical acclaim.

Chic: Natasha Lyonne, 43, oozed Manhattan cool on Friday night when she attended the Caviar Kaspia opening at the Mark Hotel in New York City, rocking a leopard print jumper

Chic: Natasha Lyonne, 43, and Sienna Miller, 41, oozed the cool of Manhattan on Friday night when they attended the opening of Caviar Kaspia at the Mark Hotel in New York City Lyonne rocked a leopard print sweater while Miller made her lips pop a crimson color, matching her bright red heels.

Sienna and Natasha joined an exclusive group at the Mark Hotel, when Justin Theroux, 51, strutted his way into the soiree in an all-black ensemble.

Jennifer Aniston’s ex-husband sported his signature clean neck, while Lilly Allen, 37, arrived with platinum blonde hair.

The British singer-songwriter glowed with a radiant complexion and donned an elegant black dress.

Hillary Clinton’s close confidant, Huma Abedin, 47, appeared in a shimmering long-sleeved metallic striped dress.

And Leslie Mann, 50, arrived on the arm of Mel Ottenberg, who is the editor-in-chief of Interview magazine.

Leslie seemed happy to have a night out on the town as she flashed a beaming smile in her luxury designer look.

Known for serving caviar-covered baked potatoes that can cost anywhere from $120 to $1,035, depending on the type of caviar, Caviar Kaspia is the epitome of lavish dining.

The A-list restaurant’s main location is a legendary hotspot in the City of Light, but Caviar Kaspia has expanded beyond Paris, opening an outpost in Los Angeles last year — and now, La Gran Apple.

Handsome: Justin Theroux, 51, made his way into the soiree in an all-black ensemble

Handsome: Justin Theroux, 51, made his way into the soiree in an all-black ensemble

Dapper: Jennifer Aniston's ex-husband wore his characteristic clean scruff

Dapper: Jennifer Aniston's ex-husband wore his characteristic clean scruff

Dapper: Jennifer Aniston’s ex-husband wore his characteristic clean scruff

Shimmering: Lilly Allen, 37, arrived with platinum blonde hair  The British singer-songwriter wore a radiant complexion and dressed in a simple and chic black dress

Shimmering: Lilly Allen, 37, arrived with platinum blonde hair The British singer-songwriter wore a radiant complexion and dressed in a simple and chic black dress

Stunning: Huma Abedin, 47, stepped out in a shimmering long-sleeved metallic striped dress.

Stunning: Huma Abedin, 47, stepped out in a shimmering long-sleeved metallic striped dress.

Leslie's Night Out: Leslie Mann, 50, arrived on the arm of Mel Ottenberg, editor-in-chief of Interview magazine.  Leslie seemed happy to have a night out on the town as she flashed a beaming smile in her luxury designer look.

Leslie’s Night Out: Leslie Mann, 50, arrived on the arm of Mel Ottenberg, editor-in-chief of Interview magazine. Leslie seemed happy to have a night out on the town as she flashed a beaming smile in her luxury designer look.