Chappell Roan gave Andreas Kronthaler for Vivienne Westwood’s “Boudoir” idea one of its most literal outings yet on Saturday, arriving at the label’s fall 2026 show in Paris in Look 34 from the house’s spring 2026 collection — a rear-baring dress that kept the front all Westwood drama and left the back cheekily exposed.

The asymmetrical style featured padded shoulders and a plunging neckline that opened into a ruffled V, edged with black beading and appliqué. The waist cinched tightly in a corset-like fashion before the skirt pushed out at the hips in gathered folds and dropped into a long drape. From the side and back, the design opened almost entirely away, leaving her sheer black tights visible.

Roan kept the accessories in the same dark register. She wore a black ribbon choker trailing down her back, dotted sheer gloves, circular black earrings and wine-hued, crushed velvet strappy sandals with wispy black trim across the toe and around the ankle, a finish that suited the dress’s lingerie-meets-costume tension. Her towering red updo and powder-white makeup pushed the look further into character.

The Vivienne Westwood appearance followed another skin-baring fashion moment for Roan. At the Grammys on Feb. 1, she wore Mugler’s 1998 “nipple ring” dress, a sheer burgundy look suspended from silver rings. One day before the Westwood show, she turned up at Mugler’s fall 2026 presentation in Paris in a much more covered look: a high-neck, long-sleeved dress with a cinched waist and narrow, body-conscious line.

That made Vivienne Westwood a natural stop. In his review for WWD, Tianwei Zhang described Kronthaler’s Vivienne Westwood spring 2026 collection as moving between “boudoir” and beach, while Kronthaler himself said, “It’s like a boudoir as well as the beach.” Roan’s version kept the boudoir half intact — ruffles, beading, peep toes, hosiery — and wore it to the house’s next show without sanding down any of its bite.