Fresh Off a Sultry London Look, Margot Robbie Stuns in a Daring Mugler Gown with a Dramatic Slit at NYC Premiere

Margot Robbie proves once more that red carpet fashion is not just about glamour—it’s about making a statement. At the New York premiere of her latest film A Big Bold Beautiful Journey, held on September 15, 2025, Robbie turned heads in a dramatic vintage Mugler gown that paired daring structure with old‐Hollywood elegance. The appearance marks another high point in her style evolution, especially following her recent productions and public appearances.

This article dives deep into Robbie’s New York red carpet moment, exploring the fashion details, style influences, her film role, and how this look stacks against her recent red carpet history.

The Venue and the Moment: A Big Bold Beautiful Journey Premiere in New York

On Monday, September 15, 2025, Margot Robbie arrived at the AMC Lincoln Square in New York City for the premiere of A Big Bold Beautiful Journey. The event was a key stop in the film’s promotional tour, coming after its UK and London debuts just days earlier. The story of this romantic fantasy film involves Robbie’s character, Sarah, crossing paths with David, played by Colin Farrell, who steps through a mysterious red door that lets the two revisit chapters from their pasts.

During this New York premiere, Robbie’s cinematic charisma was mirrored in her fashion choice: a gown that blended bold design with vintage inspiration, and one that many agreed pushed her red carpet style to a new level.

The Gown: Vintage Mugler Reimagined

The centerpiece of Robbie’s red carpet look was a reissue piece from Thierry Mugler’s Spring 1998 Haute Couture collection. The gown features a black and white corset bodice with a halter neck, dramatic cut‑outs, and double thigh‑high slits. The design balances contrast—the sharpness of black overlays with the brightness of white underlay—and structure with motion, as the slits allow for dramatic movement.

Styled by Andrew Mukamal, the dress commanded full visual attention. Robbie paired it with a sleek updo hairstyle, minimal accessories, and understated yet elegant jewelry, allowing the gown’s architecture and vintage provenance to shine. The choice to keep jewellery simple—earrings, minimal rings, and a metallic bangle—showed confidence that the gown itself could carry the moment.

Style & Influence: Mugler, Couture, and Bold Revival

Robbie’s gown taps deep into fashion history. Mugler is known for powerful silhouettes, body sculpting, corsetry, and dramatic cut‑outs. By choosing a piece from 1998, Robbie engages in a fashion conversation: reviving couture, showing respect for design heritage, and yet reimagining it in a contemporary context.

This isn’t the first time Robbie has turned to vintage Mugler. Earlier in the same campaign, during the London premiere of A Big Bold Beautiful Journey, she wore a look from the Mugler re‑edit capsule inspired by late‑1990s Mugler lingerie‑inspired sets. That look and this gown both reflect Robbie’s affinity for reference and risk: she is unafraid to wear items that challenge conventional red carpet expectations.

Red Carpet Versus London: Two Very Different Statements

Just days earlier in London, Robbie’s look was romantic, sheer, delicate—an Armani Privé gown dripping in beadwork, a tribute to couture craftsmanship, with flowing lines and a more ethereal presence. The change from that flowing, embellished dress to this sharply structured vintage Mugler gown in New York shows Robbie’s versatility.

The contrast matters: whereas the London gown seemed to lean into nostalgia and dreaminess, the New York gown asserts strength, control, and boldness. It communicates that Robbie’s red carpet presence is no longer only about beauty—it’s also about audacious fashion choices that reflect her current momentum as an artist.

Fashion Details That Matter

• The double thigh‑high slits in the Mugler gown are a major talking point. They create drama, motion, and a sense of daring, while demanding precise tailoring and confidence to pull off without mishap.

• The black cut‑out overlay adds sculptural dimension, framing the body and creating visual interest against the white corset base.

• The corset bodice—a structured, form‑fitting piece—is both flattering and historically significant in fashion, a signature of Mugler’s capacity to fuse fetishizing silhouette and high couture design.

• Hair and makeup: Robbie chose a clean updo and a makeup palette that leaned neutral with luminous skin, letting the gown remain the focal point.

Reception and Reaction

The response to Robbie’s New York gown has been overwhelmingly positive, with fashion commentators noting how the piece managed to combine vintage authenticity with modern red carpet sensibilities. Many praised the wardrobe for avoiding over‑accessorizing and for allowing the structure of the gown to do the speaking.

Critics also pointed out how Robbie avoided any wardrobe malfunction despite the daring slits and revealing cut‑outs. That reflects not only expert tailoring but also confident craftsmanship in styling. It underlines that bold fashion can be elegant and controlled.

Fans were divided between those who loved the showy couture revival and others who preferred the more romantic glamour of her earlier look in London, but few could deny the impact: this Mugler moment will be remembered as one of the year’s most striking red carpet statements.

The Role Behind the Look: A Big Bold Beautiful Journey

Beyond fashion, Robbie’s performance in A Big Bold Beautiful Journey adds another layer to how people interpret her red carpet looks. Playing Sarah, she embarks with David (Colin Farrell) on an emotional and surreal journey through memory and possibility. The film’s themes involve revisiting the past, unlocking lost moments, and embracing the bold unknown.

Her fashion choices during the premieres mirror these themes: vintage revival (the past), bold designs and risk (embracing unknown), and strong visuals that feel metaphorical. The Mugler gown is not just a dress—it echoes the film’s core: that boldness and beauty often require stepping through a door, into something both familiar and new.

Style Evolution & Context: Post‑Barbie, Post‑Motherhood

This red carpet period comes after Robbie’s global success with Barbie and follows a significant personal milestone: she became a mother in October 2024. Since then, her fashion has been closely watched—observed not just as celebrity style, but as statements of growth, power, and identity.

Her stylists, including Andrew Mukamal, have worked to balance glamour with authenticity, heritage with novelty. The London and New York looks for this film show Robbie reasserting herself in the fashion world—not just as a leading actress, but as a style icon unafraid to invoke vintage couture and risk bold cuts.

Why This Gown Matters in 2025 Fashion

The revival of late‑1990s couture, seen in Mugler’s archival designs, reflects a broader trend: vintage, archival fashion is back. Red carpet audiences want nostalgia, but also originality. Robbie’s gown checks both boxes.

Furthermore, thigh‑split designs and structured corsets have been trending, but they often risk being gimmicky. Robbie’s take, with craftsmanship and heritage, shows how these risky elements can be elevated into art. The gown bridges glamour, risk, and respect for fashion history.

Conclusion: Margot Robbie’s Mugler Moment

At the New York premiere of A Big Bold Beautiful Journey on September 15, 2025, Margot Robbie did more than turn heads—she demanded attention. Her vintage Mugler gown, with its corset structure, bold thigh‑high slits, and black‑white contrast, represents a bold fashion evolution.

This gown is a statement: of heritage, of risk, of confidence. It aligns with her evolving career—from Barbie to personal milestones, and from romantic glamour in London to architectural boldness in New York. Robbie shows that fashion can reflect where she has been and hint at where she is headed.

Her choice for this premiere captures the spirit of A Big Bold Beautiful Journey: stepping through new doors, embracing memory and possibility, and allowing beauty and boldness to coexist in the same frame.