
30% growth internationally, two million Instagram posts, hashtags that crackle, and celebrities clamoring for the pieces: Sézane is no longer a secret. The brand, founded by Morgane Sézalory, now occupies a prominent place, propelled by the enthusiasm of stars from all walks of life. In this vast game of influences, rival houses observe, sometimes envy, often take inspiration.
Sézane, the French brand that captivates fashion icons
Launched by Morgane Sézalory in 2013, Sézane embodies a very specific vision of Parisian fashion: to work on style without making it inaccessible, to focus on limited edition quantities, to emphasize sustainability, and to refuse to yield to the sirens of fast fashion. The Appartement Sézane in Paris remains the symbol of this demand for simplicity. Today, the brand stands out with a B Corp certification and the status of a mission-driven company: two assets that resonate with a generation attentive to ethics as much as to aesthetics.
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Its fame spreads quickly, beyond borders. Kate Middleton and Queen Letizia of Spain, known for their attention to detail, wear silk blouses, flowing trousers, fitted jackets, and elegant accessories signed Sézane during public appearances. This choice reflects more than just an interest in a trend: it embodies a responsible chic, a blend of independence and modernity. This rejection of excess also appeals to Selena Gomez, Sienna Miller, and India Amarteifio, all loyal to this way of reinterpreting French elegance.
The evolution of Sézane owes much to bold choices. In 2022, the holding company Téthys, owned by the Bettencourt-Meyers family, entered the capital: a new breath that accelerates the opening of retail locations in London, New York, and Los Angeles. Nevertheless, the brand does not lose its direction, multiplying solidarity collaborations and striking capsule collections. This dynamic relies on partners like Demain or La Voix de l’enfant, adding a responsible dimension to the Sézane wardrobe.
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To grasp the strength of the phenomenon, a look at celebrities wearing Sézane according to Kabanes allows one to measure the brand’s powerful influence. When these pieces appear on the front page or on the arm of a personality, they carry with them an entire imaginary of relaxed chic.
Why do celebrities adopt the Sézane style?
This attraction is no coincidence. Sézane has managed to combine modernity and authenticity, offering a wardrobe that appeals to those seeking elegance as much as to those avoiding ostentation. Actresses, designers, and royals slip into their looks the structured jacket, the airy blouse, the Justine basket, or the Claude bag, a way to adopt a refined look without overdoing it. Kate Middleton, Letizia of Spain, Sienna Miller, and Selena Gomez, each in their own way, embody this sophisticated discretion that defines the brand’s reputation.
The snowball effect works with every appearance: social media ignites when a personality wears Sézane, Instagram shares, influencers validate, and the pieces quickly become coveted. The brand cultivates desire by betting on rarity: no sales, limited editions, a promise of transparency. This clever game maintains excitement and loyalty.
And alongside style, the responsible fiber captures attention. B Corp certification, solidarity actions, involvement with Demain or La Voix de l’enfant: Sézane claims a committed fashion, where wearing a piece reveals as much about convictions as about taste. Dressing Sézane means combining refinement and ethical coherence without compromising creativity.

Inspiration: the most notable looks worn by stars
On the red carpet as well as in the street, Sézane reinvents relaxed sophistication. The British royal family, with Kate Middleton at the forefront, opts for cream knit sets, high-waisted trousers, and fitted jackets. Accessories are not left behind and make a difference: crossbody bags, gold jewelry, sparkling earrings, all contribute to a unique silhouette.
Letizia of Spain renews the exercise in a Chelsea jacket or Matheo trousers, highlighting the brand’s ability to modernize classic elegance, balancing rigor and lightness. In Paris, Sienna Miller favors the oversized trench and the Claude bag, two staples of the label. The Claude bag can also be seen on Suki Waterhouse or India Amarteifio, who sometimes opts for the Justine basket for a summery touch. Pippa Middleton is fond of the suede jacket, while Selena Gomez prefers a long, structured coat. The result: Parisian fashion spreads, reinterpreted, across all silhouettes.
Here are some examples that highlight this diversity of styles spotted:
- Cream knit with high-waisted trousers: Kate Middleton’s signature
- Oversized trench and Claude bag: Sienna Miller’s urban silhouette
- Justine basket: India Amarteifio’s summery touch
Sézane goes far beyond borders. It now dresses a generation of women who want, each in their own way, to assert their personality, values, and taste for style. This momentum is far from over: who will be the next to make the name Sézane resonate under the flashes?