For half a decade, Pieter Mulier reshaped the narrative of one of Paris’s most revered fashion houses. The Belgian creative force brought to life collections that honored the legacy of Maison Alaïa, catapulting the steering wheel into a contemporary future. As his chapter at the French house draws to a close, we are pausing to reflect on his remarkable and what comes next.

Building Fashion with Structure and Innovation: Mulier’s Journey from Architecture to Couture

Mulier’s journey to the upper echelons of fashion was far from accidental. A graduate of Belgium’s Royal Academy, he initially trained in architecture. His training would become the foundation that would influence his approach to garment construction. Before taking the reins at Alaïa, he spent a year working closely with designer Raf Simons across several major houses - including Simons’ own label in Antwerp, Jil Sander, Dior, and later Calvin Klein. The last was where he served as global creative director. This blend of architectural discipline and high fashion apprenticeships equipped him with a rare technical and conceptual fluency.

Pieter Mulier and Raf Simons. (Self Service). Courtesy of BOF

Guiding Alaïa into a New Era Without Losing Its Signature Identity

Appointed creative director in 2021, Mulier took on a task that many in the industry viewed as daunting, succeeding the founder of a house defined by singular vision and craftsmanship. Alaïa, founded by Azzedine Alaïa, was known for its meticulous construction and celebration of form. A legacy that any successor could easily overshadow. Yet Mulier embraced both respect for atelier tradition and an appetite for innovation.

Under his leadership, Alaïa’s runway shows became anticipated events. Standout pieces - from sleek ballet flats to the Le Teckel shoulder bag - not only reflected his design voice but also helped expand the brand’s commercial footprint. His designs often balanced tension between restraint and drama, crafting garments that felt both timeless and thoroughly modern.

Making Alaïa Relevant for a New Generation While Preserving Its Heritage

The impact of Mulier’s creative input extended beyond exploration. During his time as CD, the brand grew in both popularity and measurable visibility. Under his leadership, Alaïa opened 10 new boutiques globally, expanding into key regions such as Asia and the Middle East. The label reported a 35 percent increase in international sales, with social media following nearly doubling as collections drew a wider, younger audience. Fans and critics appreciated how he kept the heart of Alaïa’s style intact while adding fresh ideas that appealed to a new generation.

Fashion experts also admired his careful attention to detail and design. His collections stood out for their quality and originality. This helped Aiaïa remain a strong, recognizable presence during Paris Fashion Week and keep the brand relevant worldwide.

**Diamond Stingily’s sculptures stand in contrast with Philippe Malouin’s Mollo seating. Courtesy of Alaïa**

Tracing Mulier’s Signature Touch Across Every Collection at Alaïa

Over his five years at Alaïa, Pieter Mulier consistently balanced respect for the house’s heritage with a fresh, contemporary vision. His debut collection in Summer 2021 paid homage to Alaïa’s signature body-conscious tailoring and sculptural knitwear while introducing draped hoods, perforated leather, and seamless crêpe that signaled his own design voice. By Winter–Spring 2022, he was experimenting with proportion, expanding classic knitwear and corsetry into maxi skirts and pleated minis, blurring the line between couture and ready-to-wear.

Spring/Summer 2023 revealed a bolder, more personal expression. Circular palazzo pants, rounded blousons, and streamlined leather and wool catsuits showcased Mulier’s mastery of movement and structure, merging intimacy with statement silhouettes. Summer–Fall 2024 focused on simplicity as invention, using a single merino wool yarn to transform it into bubble knits, teddy coats, and tactile textures that celebrated both comfort and couture.

By Fall–Winter 2025/2026, his aesthetic had matured fully. Sculptural silhouettes combined with rich materials — second-skin knits, structured leather, velvet, and lace — highlighted body contouring, precise tailoring, and dramatic draping, producing garments that were timeless yet forward-looking. Spring/Summer 2026 closed his chapter at Alaïa with a season defined by purity of form and tactile contrasts, from crisp cotton tunics to silk fringe and seamless knit hybrids, demonstrating Mulier’s gift for architectural design married with wearability.

Across all these seasons, Mulier’s collections were a testament to disciplined innovation, careful craftsmanship, and a keen understanding of how to honor a legacy while creating fashion that resonates with both longtime devotees and a new generation of admirers.

Closing a Defining Era at Alaïa and Looking Toward New Horizons

In late January 2026, Alaïa announced that Mulier would step down after presenting the house’s Summer-Fall 2026 collection during Paris Fashion Week in March. This will conclude a chapter for both designer and label. Though a successor has not yet been confirmed, the energy around potential candidates reflects the dynamic nature of luxury fashion’s leadership landscape.

Simultaneously, industry developments hint at the next act in Mulier’s career. In early February 2026, the new leadership direction was confirmed, appointing him to lead another major fashion house, Versace, where he will continue to apply his architectural thinking to one of Milan’s most storied labels.

Precision, Poise, and the Art of Modern Couture

In every collection he led, there was a quiet confidence: garments that understood the body, materials that spoke through texture and movement, and an unwavering commitment to quality. As he transitions to fresh creative challenges, his work at Alaïa will remain a testament to the power of disciplined innovation in the world of couture and beyond.

No matter what, we will keep following Mulier’s journey and see where he goes next.

Pieter Mulier: The Visionary at the Helm of Couture