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Margot Robbie attended the premiere of A Big Bold Beautiful Journey on Sept. 11 in a naked look that left jaws on the floorThe actress, who welcomed her son in November, arrived in a see-through embellished gown that exposed her backside and bedazzled thong, marking her first red carpet since giving birthRobbie’s last press tour was for her award-winning film Barbie, for which she wore many outfits dedicated to the doll

Margot Robbie is covering all the bases for what it takes to be a fashion icon.

After a hiatus following the Barbie press tour and the birth of her first baby, a boy, with husband Tom Ackerley in November, the actress has finally returned to the red carpet in a big way.

On Sept. 10, the Oscar-nominated producer, 35, arrived at the London premiere of her new film, A Big Bold Beautiful Journey, where she turned heads in her most naked look to date.

Margot Robbie in Armani Privé couture.

Joe Maher/Getty

For the big event, also attended by her costar Colin Farrell, Robbie left little to the imagination in a see-through gown designed with colorful strategically placed beading that all but showed off her post-pregnancy figure.

The dress, which she wore with Aquazzura’s Love Struck 105 silver heels, displayed her backside, which she partially covered with a bedazzled thong, while the daring open back — accented with an embellished strap — and waist-baring silhouette revealed more skin than Robbie has shown in red carpets past. According to British Vogue, the look debuted as a part of the Armani Privé Spring/Summer couture collection.

Behind Margot Robbie’s butt-baring gown.

Joe Maher/Getty

Robbie styled her hair up in a ’90s-style wrap bun that exaggerated the revealing design of the gown and wore makeup that featured a bronzed eyeshadow look and a nude peach lip.

Unlike his costar, Farrell, dressed in Dolce & Gabbana, was covered from head to toe in a trench coat and white button-up shirt accessorized with a tie, black trousers and dress shoes.

Robbie began promoting A Big Bold Beautiful Journey on Aug. 20. The movie follows singles Sarah (Robbie) and David (Farrell), who meet at a mutual friend’s wedding. After a twist of fate, the pair go on an adventure together, where they “re-live important moments from their respective pasts, illuminating how they got to where they are in the present — and possibly getting a chance to alter their futures,” per a synopsis.

Colin Farrell and Margot Robbie at the photocall for “A Big Bold Beautiful Journey”.

Kate Green/Getty

For the photocall in Los Angeles, Robbie, styled by Andrew Mukamal, wore a corseted Stella McCartney little black dress. Earlier on Sept. 11, she attended a photocall in the U.K. dressed in what Page Six reported to be an abs-baring Mugler skirt set inspired by the house’s Fall/Winter 1998 Lingerie collection.

In 2023, Robbie dedicated herself to wearing human-size outfits inspired by Barbie’s most iconic looks, from the doll’s 1959 striped swimsuit to the sparkly gown made on the doll’s 50th anniversary.

“We’re finding Barbie references from decades past and just doing it really for the big Barbie fans out there, people who are actually collecting those Barbies. We’re hoping to get them excited,” she told PEOPLE at the Barbie world premiere in 2023.