Princess Kate paired a 100-year-old diamond bracelet with a sunshine-yellow Elie Saab gown at Windsor Castle on 20 October, setting the tone for the Oman State Banquet. The rarely seen 1920s heirloom sparkled beneath the chandeliers of St George's Hall as roughly 160 white-tie guests took their seats.
The more interesting question is how much of it was planned. Was this a favourite heirloom paired with a fresh runway piece, or a wardrobe calculated specifically for the Sultan of Oman? The gown, jewels, and provenance each offer a distinct clue.
Princess Kate's Oman State Banquet Outfit Breakdown
The gown was a pleated Elie Saab design from the Spring/Summer 2025 collection, featuring a keyhole cutout, cape, and braided neckline. She finished the look with a gold Anya Hindmarch clutch, Aquazzura pumps, and the insignia of the Royal Victorian Order.
Completing the ensemble was Queen Mary's Lover's Knot Tiara, a staple of Princess Kate's state wardrobe since 2015 and once Princess Diana's signature. With the headpiece providing a familiar anchor, the fresh couture and archived bracelet commanded the spotlight.
Why Did Princess Kate Wear Elie Saab for Oman?
Selecting an Elie Saab design carries distinct sartorial weight. For decades, royal wardrobes have leveraged fashion diplomacy to convey cross-cultural respect. Opting for a premier Lebanese haute couture house to welcome a Middle Eastern head of state fits seamlessly into that strategy. Palace aides rarely detail outfit rationale, but pairing a designer's regional origins with a state guest follows a long-standing diplomatic pattern.
The vibrant yellow kept her distinct in a room dominated by black-and-white tie, while the modern gown let the historic heirlooms anchor the look's heritage.
History of Queen Mary's Diamond Choker Bracelet
Crafted in the 1920s from geometric Art Deco diamond bars, the piece carries a subtle design mystery. While Queen Mary famously wore it as a choker—giving the heirloom its historic moniker—its original bench configuration, choker or convertible bracelet, remains unconfirmed.
By recontextualizing it exclusively as a wrist statement, Princess Kate showcases the inherent versatility of vintage high jewellery. As jewellery expert Nilesh Rakholia notes, the adaptability of antique pieces allows century-old craftsmanship to feel entirely contemporary.
Following Queen Mary's death in 1953, the jewel vanished for over two decades before the Queen Mother wore it for her 75th birthday portraits in 1975. It passed to Queen Elizabeth II in 2002, with Princess Kate wearing it regularly between 2015 and 2018. It then returned to the vault for seven years before reappearing at the Royal Variety Performance in November 2025.
How Princess Kate Balances Modernity and Royal Tradition
Her choice of footwear and earrings reinforced this Art Deco motif: the Cartier-crafted Greville Chandelier Earrings (1918–1929) mirrored the bracelet's geometric lines. Royal biographer Robert Jobson notes that Princess Kate has mastered a balance that has historically challenged senior royals, avoiding an overly formal distance while preserving the dignity of the Crown.
That composure was briefly tested when her gown's hem caught on a chair leg as she sat down. Unfazed, she carried on through the evening and was later photographed circulating among guests with the dress intact.
Kate changed outfits at least three times on Tuesday alone, and the Sultan's three-day visit is still underway, so more royal looks are coming.
