The 78th Cannes Film Festival wasn’t just a celebration of cinema—it was a dazzling display of high jewellery and horological finesse, as the world’s most stylish stars lit up the Croisette.
From diamond-drenched statements to quietly commanding timepieces glittering on wrists, this year’s festival proved that the red carpet is as much about storytelling in carats and complications as it is on screen.
Below, we spotlight the most spectacular jewellery and watch moments from Cannes 2025.
Natalie Portman in Tiffany & Co
At the premiere of Eddington, Natalie Portman exuded timeless glamour in a Tiffany & Co. ensemble from the 2025 Blue Book Collection. Her look featured a necklace in 18k white and yellow gold with diamonds of over 10 total carats, paired with platinum earrings set with diamonds, and a ring in 18k white gold crowned by a diamond of over 10 carats.
Rihanna in Boucheron
Rihanna made a stunning appearance in pieces from Boucheron’s Histoire de Style, Untamed Nature High Jewellery collection. Her look included Rosier pendant earrings paved with diamonds in white gold, the Hopi le Colibri ring set with an aquamarine, sapphires, and diamonds, and the Vendôme Liseré ring featuring an aquamarine surrounded by diamonds and black lacquer.
Mina in Boucheron
Twice’s Mina stepped out in the Rosier Question Mark necklace and multi-wear Rosier pendant earrings, each set with pear-shaped diamonds and pavé accents in white gold. Her look was completed with the diamond-set Cyclamen ring — all from the Untamed Nature High Jewellery collection.
Kim Go-Eun in Chanel
At the Mission: Impossible–The Final Reckoning premiere, Kim Go-Eun stunned in an iridescent black tweed jumpsuit with a flowing lace chiffon cape from Chanel’s Spring/Summer 2025 collection. She completed the look with Pluie de Comètes earrings and a Comète ring from Chanel High Jewellery—celestial sparkle that added just the right dose of drama to her graceful edge.
A$AP Rocky in Bvlgari
A$AP Rocky lit up the 2025 Cannes red carpet in Bvlgari, pairing a High-End Monete watch in 18k gold—set with 240 diamonds—with a bold High Jewellery brooch and ring. The brooch featured a striking 7.86-carat rubellite framed by onyx and pavé diamonds, while the ring echoed the look with a 9.89-carat rubellite and step-cut diamonds. A masterclass in Roman opulence, worn with Rocky’s signature edge.
Lin Chi-ling in Qeelin
Lin Chi-ling radiated poetic elegance on the Cannes red carpet in Qeelin’s Wulu Fairy High Jewellery. Her look featured an 18k white gold question mark necklace with a fancy intense yellow diamond, paired with diamond-set Wulu earrings and bracelet. For the Kering Women in Motion dinner, she changed into the Wulu Garden collection—pink sapphires and diamonds evoking femininity and vitality. A luminous expression of Eastern grace and strength.
Han So-hee in Boucheron
Korean actress Han So-hee wore the Lierre necklace and coordinating ring from Boucheron’s Untamed Nature High Jewellery collection, featuring cabochon rock crystal, pavé diamonds, and white gold for an ethereal yet grounded presence.
Rosie Huntington-Whiteley in Tiffany & Co
For the premiere of Nouvelle Vague, Rosie Huntington-Whiteley turned heads in a transformable necklace from the 2024 Tiffany Blue Book Collection—featuring a diamond of over 18 carats and diamond accents, with the drop detachable to be worn as a ring. She paired it with 18k white gold earrings with over 17 total carats of diamonds and a platinum ring with an 11-carat diamond.
Zoey Deutch in Tiffany & Co
Also at Nouvelle Vague, Zoey Deutch dazzled in a platinum necklace set with over 43 carats of diamonds, platinum earrings of over 4 total carats, a Tiffany Victoria mixed cluster bracelet, and a platinum ring set with a diamond of over 15 carats.
Dakota Johnson in Boucheron
Dakota Johnson chose the ethereal Laurier pendant earrings, paved with diamonds and set in white gold, complemented by a Serpent Bohème XL ring—both from Boucheron’s Untamed Nature collection.
Philippine Leroy-Beaulieu in Pomellato
French actress Philippine Leroy-Beaulieu wore Pomellato’s Marvelous Griffes earrings — rose gold set with cabochon-cut mandarin garnets and orange sapphires — alongside archive rings and bracelets from the Italian maison. The earrings are part of Pomellato’s new High Jewellery collection launching June 2025.
Alexa Chung in Boucheron
Alexa Chung brought structured sparkle in Boucheron’s Art Deco earrings with diamonds and black lacquer, the mother-of-pearl Quatre cuff, the diamond-paved Flèche bracelet, and the Quatre Radiant Edition ring adorned with round, baguette, and princess-cut diamonds.
Alessandra Ambrosio in Pomellato
Alessandra Ambrosio debuted Pomellato’s Asimmetrico Tanzanite High Jewellery parure. The rose gold necklace showcased a 55.96-carat tanzanite and over 2,800 diamonds, while her matching ring sparkled with a 37.73-carat tanzanite surrounded by diamonds.
Zhou Dongyu in Boucheron
Zhou Dongyu made a statement in the Rosier necklace featuring three D-flawless type IIA diamonds—8.15 ct, 4.19 ct, and 2.01 ct—set in white gold and completed with 2,300 hours of craftsmanship. She wore it with Lierre earrings, set with tanzanites and paved with diamonds.
Diane Kruger in FRED
Diane Kruger showcased FRED on two occasions. For the Amrum premiere, she wore a Force 10 set featuring a white gold ring with a pear-cut 0.5-carat diamond, diamond-paved earrings, and bracelets. Later, she shone in the Soleil d’Or Sunrise High Jewellery set, featuring a dramatic bib necklace and matching ring in white gold and diamonds.
Hande Erçel in Pomellato
Turkish actress and Pomellato ambassador Hande Erçel attended the Mission Impossible – The Final Reckoning press conference in a rose gold suite featuring diamonds and aquamarines from Pomellato’s upcoming June 2025 High Jewellery collection. Her ensemble included a necklace, earrings, and a Nudo High Jewellery ring—a tribute to modern femininity.
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