Emma Watson wears Jacquemus at United for Wildlife London event

Emma Watson went black and white color blocking with a Jacquemus design for Monday’s Business Forum at the Royal Foundation’s United for Wildlife event in London.

The “Harry Potter” alum was joined by Britain’s Prince William and Oscar-nominated actor Benedict Cumberbatch at Monday’s event, where she sported a look by French luxury fashion house La Robe Picello that was loosely inspired by the spring 2026 ready-to-wear collection.

Watson’s black and white dress featured a fitted black bodice with a scoop neckline that framed an antique pearl and heart pendant necklace. The bodice had short sleeves and fell just below the waistline.

At the drop waist, the fitted black fabric switches to a flouncy white material with tiered elements. The white cotton poplin skirt had a ruffled top layer followed by an intricate floral design with cutouts and finished with a midi hemline.

La Robe Pisello features a striking resemblance to a dress that appeared as part of the French luxury brand’s Spring 2026 ready-to-wear collection, which debuted during Paris Fashion Week in June 2025.

Watson’s dress was similar to look number 9 in a collection overseen by the brand’s founder Simon Port Jacquemus. The curation was inspired by “the people who toil in the fields or sell their produce on the side of the road,” wrote Miles Socha in a review of the collection for WWD.

The designer’s “field-to-catwalk story lives on in a plethora of sack dresses and smocked tops, some too large, with full, full-circle skirts worn like aprons, with fabric folded tightly in front,” Socha writes.

London’s 2026 Climate Action Week begins on Saturday and runs until 28 June. This independent climate event will feature a number of conversations and forums with prominent figures championing conservation and environmental stewardship for the future health and well-being of our planet.