Emma Watson wore a black-and-white Jacquemus dress on Monday to The Royal Foundation’s United for Wildlife business forum in London. The appearance put her beside Prince William of the U.K. and Benedict Cumberbatch during London’s 2026 Climate Action Week.
Watson’s look was called La Robe Pisello, and the details were precise: a fitted black bodice with a scoop neckline, short sleeves, and an antique pearl and heart pendant necklace. The dress then shifted at the drop waist into a white tiered skirt with a frilly top layer, floral cutouts, and a midi hemline.
Jacquemus and London
La Robe Pisello resembled look number nine from Jacquemus’s spring 2026 ready-to-wear collection, which debuted in June 2025 during Paris Fashion Week. That reference gives the dress more than a celebrity-facing angle; it places Watson inside the brand’s current design language rather than a one-off red carpet distraction.
The overlap also matters because the event itself was not a standalone fashion moment. It sat inside a forum tied to United for Wildlife, which pushed the look into a setting where conservation language and clothing choices were being read together.
Prince William and Benedict Cumberbatch
Watson joined Prince William of the U.K. and Benedict Cumberbatch at the forum, making the guest list the clearest sign that the event was built around public-facing figures, not a private industry gathering. That mix gave the day extra reach in London, where climate-focused programming was already running through June 28.
The result is a neat collision of fashion and institutional visibility: Jacquemus got a look placed in front of a high-profile audience, and Watson used a sharply constructed black-and-white dress to stand out without breaking from the forum’s tone. The antique pearl and heart pendant kept the outfit from reading purely architectural; it added a softer finish to a dress that already did most of the talking.
Look Number Nine
The complication is simple. La Robe Pisello resembled look number nine from the spring 2026 ready-to-wear collection, but the available details do not say whether Watson wore that exact runway piece or a separate design built from the same idea. That leaves the strongest reading as comparison, not certainty.
For readers tracking the intersection of celebrity dressing and fashion business, that distinction is the point. Watson’s appearance was less about a single outfit than about how Jacquemus’s recent runway vocabulary can travel from Paris Fashion Week into a London forum and still carry the brand’s shape, even when the garment’s exact origin is left open.
