Other A-list guests in attendance at the release party included Dua Lipa and Billie Eilish — who are both featured artists on the film’s official musical soundtrack.

At the star-studded event, the Babylon star — who was joined by her husband, Tom Ackerley, at a screening of Greta Gerwig’s hit fantasy flick earlier this week — left her honey blonde tresses down in soft waves.

Margot Robbie and Ryan Gosling attended the Barbie Faber & Faber Screenplay book party in Los Angeles on Saturday

The 33-year-old actress put on a show-stopping display as she modeled a hot pink minidress with bows and peep-toe heels. She posed for several photos with Gosling and America Ferrera at the party held at the Pendry West Hollywood hotel

She also rocked a rosy pink monochromatic makeup look which highlighted her natural beauty.

For a subtle and sweet flush, she wore rose gold blush and topped it off with a mauve pink lip gloss.

Gosling looked handsome as he bundled up in a gray coat worn over a black button-down and dress pants.

The stylish pair were also seen joining their other costar, Ferrera, for a cast photo.

The Ugly Betty actress donned a cropped, tweed blazer teamed with a suede midi skirt for the special party.

To match her chic top, she wore a pair of white pumps with delicate stitching details.

Robbie also posed for photos with Dua Lipa and Billie Eilish.

The Houdini hitmaker was dazzling in a silver, sequined minidress with ruching along the side as well as knee-high leather boots.

The trio of leading stars of the Barbie film also posed for a photo with the director Greta Gerwig

Robbie also posed for photos with Dua Lipa and Billie Eilish

Eilish — who later posed for a sweet snap with Ferrera — donned a vintage Barbie graphic T-shirt, baggy jeans and a cozy beanie

The two musicians were also seen beaming in a photo together as they showed off their juxtaposing and chic styles

The Houdini hitmaker was dazzling in a silver, sequined minidress with ruching along the side as well as knee-high leather boots. She also sported dainty silver jewelry to match her outfit , which was accentuated by her new red velvet hair

Eilish — who later posed for a sweet snap with Ferrera — donned a vintage Barbie graphic T-shirt, baggy jeans and a cozy beanie.

The two musicians were also seen beaming in a photo together as they showed off their juxtaposing and chic styles.

Lipa and Eilish also chatted with and took a quick snap with Mark Ronson — one of the masterminds behind the Barbie movie’s official soundtrack.

At the event, Eilish was joined by her brother, Finneas O’Connell, in a photo with Gosling.

At one point, Eilish bundled up in a bubblegum pink hoodie and put on silver, silver and rose-tinted glasses as she posed for a photo with her brother.

O’Connell looked effortlessly stylish in a black and white sweater and slacks.

He also posed for a photo with Gosling as the stylish pair showed off their monochromatic, dark outfits

Ronson was also spotted with the music supervisor of the Barbie soundtrack, George Drakoulias — who looked put-together in a navy sweater vest worn over a sky blue button-down and forest green, corduroy pants.

Lipa and Eilish also chatted with and took a quick snap with Mark Ronson — one of the masterminds behind the Barbie movie’s official soundtrack

At the event, Eilish was joined by her brother, Finneas O’Connell, in a photo with Gosling

At one point, Eilish bundled up in a bubblegum pink hoodie and put on silver, silver and rose-tinted glasses as she posed for a photo with her brother — who looked effortlessly stylish in a black and white sweater and slacks

O’Connell also posed for a photo with Gosling as the stylish pair showed off their monochromatic, dark outfits

Ronson was also spotted with the music supervisor of the Barbie soundtrack, George Drakoulias — who looked put-together in a navy sweater vest worn over a sky blue button-down and forest green, corduroy pants

Andrew Wyatt, the other hitmaker behind the original motion picture score, was seen in a group photo with Robbie and Ferrera, director Gerwig as well as musicians Ronson, Eilish, and Lipa

The entire cast and musical talents behind the soundtrack for Barbie also posed for a group photo with Warner Bros. co-chairs and CEOs Pamela Abdy and Michael De Luca at the release party as well as cinematographer Rodrigo Prieto

Robbie showed off her hot pink ensemble matching retired model and bombshell Barbi Benton’s own vibrant look featuring a fur coat and fedora

At the party, Robbie and Gosling also posed for a photo with Abdy

Robbie’s husband and Barbie producer Tom Ackerley was also spotted in attendance and posing for a snap with Lipa

Ferrera was seen beaming alongside Jon Batiste — who looked effortlessly stylish in a leather jacket and black jeans

Earlier in the day, Robbie joined Gosling and Ferrera at the Special All Guild Screening and Q&A in Burbank, California

She donned another vibrant outfit with bows but in a bright and sunny yellow.

She modeled a peplum blouse with bows and the matching miniskirt and Mary Jane heels to answer questions at the screening with her costars

The trio chatted enthusiastically as they answered fan questions about their hit fantasy flick

Gosling and Ferrera were also spotted shaking hands while chatting onstage

Earlier in the day, Robbie joined Gosling and Ferrera at the Special All Guild Screening and Q&A in Burbank, California.

She donned another vibrant outfit with bows but in a bright and sunny yellow.

For the screening, she modeled a peplum blouse with bows and the matching miniskirt.

She completed her monochromatic look with a pair of vibrant Mary Jane shoes in the same shade of yellow.

Gosling had also changed his look and appeared cozy-chic in a white T-shirt teamed with a button-down cardigan.

He donned dark slacks and completed his look with shiny, patent leather oxford shoes.

Ferrera put on an elegant display as she modeled a pinstriped, cream suit and chunky black boots.