Mary-Louise Parker, 55, takes rare family photo with the son she shares with ex Billy Crudup as well as her adopted daughter

Mary-Louise Parker made Thursday night a family night. 

The 55-year-old actress was seen posing with both her children when celebrating her return to Broadway with the opening night party of The Sound Inside at Studio 54 in New York City.

The Weeds star looked like a proud mother as she stood between daughter Caroline Aberash Parker and son William Atticus Parker.

Family night: Mary-Louise Parker celebrated her return to Broadway with The Sound Inside on Thursday. But the star was not alone as she posed for a rare photo with her two children Caroline Aberash Parker and William Atticus Parker

Family night: Mary-Louise Parker celebrated her return to Broadway with The Sound Inside on Thursday. But the star was not alone as she posed for a rare photo with her two children Caroline Aberash Parker and William Atticus Parker

So close: William, who is 15-years-old, is Mary-Louise¿s son from her relationship with Watchmen actor Billy Crudup. Mary-Louise and Billy were together from 1996 until 2003

So close: William, who is 15-years-old, is Mary-Louise‘s son from her relationship with Watchmen actor Billy Crudup. Mary-Louise and Billy were together from 1996 until 2003

William, who is 15-years-old, is Mary-Louise‘s son from her relationship with Watchmen actor Billy Crudup.

Mary-Louise and Billy were together from 1996 until 2003.

William was named after his 51-year-old dad as Billy's full name is William Gaither Crudup. Crudup is now reportedly dating Naomi Watts.

Her little girl! Mary-Louise's daughter Caroline was adopted from Ethiopia as a baby girl in 2007. She was stunning in a black dress and strappy heels

Her little girl! Mary-Louise's daughter Caroline was adopted from Ethiopia as a baby girl in 2007. She was stunning in a black dress and strappy heels

William looked handsome in a dark suit with a print shirt. 

Crudup seen here in August with Cate Blanchett

Crudup seen here in August with Cate Blanchett

Mary-Louise's daughter Caroline was adopted from Ethiopia as a baby girl in 2007. She was stunning in a black dress and strappy heels.

Parker walked the red carpet in a navy blue suede suit, which she wore over a sexy black lace top.

She completed the look with a silver chained necklace and a pair of black patent leather Mary Janes.

She arrived with her co-star Will Hochman, who donned a teal tartan suit over a matching dress shirt. Parker and Hochman shared a hug on the red carpet as they celebrated the opening of their show. 

Also at the event was Susan Sarandon who was dressed in a cozy-looking crimson faux fur jacket with large lapels and a popped collar.

Teal tartan: She arrived with her co-star Will Hochman, who donned a teal tartan suit over a matching dress shirt

Teal tartan: She arrived with her co-star Will Hochman, who donned a teal tartan suit over a matching dress shirt

Take a bow: Hochman and Parker held hands as they took a bow after the show

Take a bow: Hochman and Parker held hands as they took a bow after the show

The long coat was worn with black slacks and a pair of burgundy leather high-heeled boots.

Under the jacket, she wore a crisp white button-down dress shirt, buttoned to the top.

She completed the look with a pair of round tortoiseshell eyeglasses and some small gold mismatched earrings.

Taylor Schilling cut an androgynous chic look, sporting an oversized blue tartan blazer.

Broadway opening: Susan Sarandon hit the red carpet in a cozy-looking crimson faux fur jacket with large lapels and a popped collar

Broadway opening: Susan Sarandon hit the red carpet in a cozy-looking crimson faux fur jacket with large lapels and a popped collar

Androgynous chic: Taylor Schilling cut an androgynous chic look, sporting an oversized blue tartan blazer
Black shirt: She wore it over a black dress shirt, which was buttoned to the top, with the sleeves peeking out from under the coat

Androgynous chic: Taylor Schilling cut an androgynous chic look, sporting an oversized blue tartan blazer. She wore it over a black dress shirt, which was buttoned to the top, with the sleeves peeking out from under the coat

Black duster: Gwendoline Christie looked autumn chic in a black duster, which she wore over a white shirt with the top buttons undone

Black duster: Gwendoline Christie looked autumn chic in a black duster, which she wore over a white shirt with the top buttons undone

She wore it over a black dress shirt, which was buttoned to the top, with the sleeves peeking out from under the coat. 

Schilling completed the look with a pair of slim black pants and some black patent leather wingtip dress shoes.

Gwendoline Christie looked autumn chic in a black duster, which she wore over a white shirt with the top buttons undone.

She paired it with black pants and a pair of classic white Converse sneakers with a satin finish. 

Serving looks: Cynthia Nixon served fashion in a short-sleeve black coat over a sheer black-and-white turtleneck with a matte black skirt

Serving looks: Cynthia Nixon served fashion in a short-sleeve black coat over a sheer black-and-white turtleneck with a matte black skirt

Alligator boots: Molly Ringwald opted for a tan belted trenchcoat over a black top with brown alligator boots

Alligator boots: Molly Ringwald opted for a tan belted trenchcoat over a black top with brown alligator boots

London chic: Isabelle Huppert looked London chic in a grey tartan double-breasted trenchcoat, trimmed in tan leather piping with matching leather buttons

London chic: Isabelle Huppert looked London chic in a grey tartan double-breasted trenchcoat, trimmed in tan leather piping with matching leather buttons

Cynthia Nixon served fashion in a short-sleeve black coat over a sheer black-and-white turtleneck with a matte black skirt.

She arrived with Rosie O'Donnell, who sported a black satin duster with a leafy embroidered print.

Molly Ringwald opted for a tan belted trenchcoat over a black top with brown alligator boots.

She was accompanied by husband Panio Gianopoulos, who sported a black coat with jeans and a dress shirt.

Isabelle Huppert looked London chic in a grey tartan double-breasted trenchcoat, trimmed in tan leather piping with matching leather buttons. 

Mary-Louise Parker, 55, takes rare family photo with son and adopted daughter

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