Bow Down to Kate Middleton’s Tiara Moment With Prince William

Kate Middleton Continues Blonde Streak in End of Summer Hair TransformationFor Kate Middleton, there's one royal jewel that reigns supreme. The Princess of Wales reached for her tried and true accessory, the famed Queen Mary's Lover's Knot tiara, for her and husband Prince William's state banquet with Sultan Haitham bin Tariq of Oman Oct. 20. In addition to the spectacular headpiece, which features 19 arches and 28 drop-shaped pearls, Kate donned a flowy yellow gown by Elie Saab featuring a braided collar, keyhole cutout and chiffon cape. She completed her majestic look with earrings and a diamond bracelet that once belonged to the late Queen Elizabeth II, as well as the Royal Family Order sash and the Royal Victorian Order star. This marks the 16th time that Kate has worn the Lover's Knot—the most out of all the tiaras in the royal collection—since marrying William in 2011. Crafted in 1913, the diadem was made for Queen Mary as a copy of another piece belonging to Princess Augusta of Hesse-Kassel, who was named the Duchess of Cambridge—a title Kate also holds—in 1818.But there may be a sentimental reason as to why the Lover's Knot takes the crown in Kate's eyes. As former royal butler Grant Harrold previously noted, the tiara was one of Princess Diana's "favorite pieces" before her 1997 death. "I believe Kate wears this to keep her late mother-in-law’s memory alive,” he told InStyle in March. “Kate will know how much William misses his mother, so I think she makes a conscious effort to incorporate elements of her during her time as Princess of Wales." “There are obviously many comparisons between the two royal women, and this is a way Kate can ensure people continue to talk about and remember Diana,” he continued. “I think it’s very clever and special and shows how thoughtful Kate is.”Aaron Chown - WPA Pool/Getty ImagesAnd the connection to Diana doesn't stop there. After all, the Lover's Knot was made by Garrard, the same jeweler behind Kate's 12-carat sapphire engagement ring previously owned by the People's Princess. "It’s obviously a favorite of Kate’s, and it’s easy to see why, as it’s an incredible piece of jewelry," Harrold said of the Lover's Knot. "However, I believe there is a stronger, more emotional reason why we’ve seen her wearing it so often since she joined the royal family. It’s very much a tribute to Diana." To see more of Kate's memorable fashion moments through the years, keep reading...Chris Jackson/Getty ImagesPrincess of StyleShortly after succeeding the Princess of Wales title, Kate wore this stunning Jenny Packham gown with Queen Mary's Lover's Knot Tiara to a state dinner in 2022.Samir Hussein/WireImageChristmas CheerKate Middleton's color palette was muted but she radiated joy all the same during the royal family's walk to church on Christmas morning in 2025, her return to the annual tradition after celebrating the holiday privately with Prince William and their kids the previous year.Victoria Jones - Pool/Getty ImagesRoyal in RedFor a Diplomatic Corps reception at Buckingham Palace in December 2022, the Princess of Wales styled her sparkly Jenny Packham gown with several regal accessories, including Queen Elizabeth II's Royal Family Order badge, the sash and star of the Royal Victorian Order, diamond frame earrings, a diamond Art Deco brooch and Queen Elizabeth the Queen Mother's famed Lotus Flower Tiara.Tim Rooke/ShutterstockVision in WhiteThere's nothing more refreshing than seeing a royal who isn't afraid to wear an item on numerous occasions. The royal last wore this Barbara Casasola number at the 2016 for the Art Fund awards.Tim Rooke/ShutterstockElegance at WorkKate took the army's salute in 2019 while sporting a lovely Catherine Walker coat dress, which she paired with matching clutch and shoes.Victoria Jones/PA WireFlaunt ItKate showed the Americans how it is done in a white gown by Alexander McQueen, the same designer who created her iconic wedding dress, during a state banquet with Steven Mnuchin in 2019.ShutterstockTea Party ReadyWhen in the presence of the Queen, it is pretty important to wear your Sunday finest. In 2019, the Princess of Wales sported a pink coat dress by Alexander McQueen and a fascinator by Juliette Botterill.REX/ShutterstockBoho ChicFor the 2019 Chelsea Flower Show, the Duchess of Cambridge wore a whimsical dress from British label Erdem.Karwai Tang/WireImageSophisticated SuitsKate wore a matching blazer and skirt combo to The Royal Foundation's Mental Health in Education conference in 2019.Anthony Harvey/BAFTA/ShutterstockGorgeous GownsThe royal stunned in a white McQueen gown for the 2019 BAFTA Awards.Chris Jackson - WPA Pool/Getty ImagesGoing GreenKate turned heads in this Eponine London dress for Children's Mental Health Week 2019.Neil Mockford/GC ImagesCute and CasualIn 2019, 5he royal looked fabulous in a tweed jacket and boots at Islington Community Garden.Max Mumby/Indigo/Getty ImagesPretty in PlaidKate looked gorgeous in a Q by McQueen green and blue tartan coat dress during a visit to Scotland in 2019.Heathcliff O'Malley - WPA Pool/Getty ImagesBold and BeautifulThe royal isn't afraid to rock a bold shade, like this pretty magenta she wore to The Royal Opera House in 2019.Max Mumby/Indigo/Getty ImagesBeautiful in BlueKate was all smiles as she watched a flypast to celebrate the centenary of the Royal Air Force in 2018.Karwai Tang/WireImageElegant in EmeraldThe mother of three stunned in this number for an event with Family Action Charity in 2019.Samir Hussein/WireImageRoyal RedNext to Meghan Markle's royal blues, the Duchess of Cambridge's monochromatic ensemble made a major impact in 2018.Max Mumby/Indigo/Getty ImagesTeal TimeIn January 2019, Kate took a stroll with Prince William in a coat dress, matching hat and black pumps.Chris Jackson/Getty ImagesFestive and ChicKate was a major holiday fashion inspo in this green and white L.K. Bennett polka dot dress paired with a khaki clutch and matching heels during a 2018 visit to Evelina London Children's Hospital.Victoria Jones - WPA Pool/Getty ImagesCinderella StoryThe princess looked like a real-life Cinderella at a 2018 diplomatic reception in this sparkly Jenny Packham gown that featured sheer cap sleeves and clusters of sequins.Samir Hussein/Samir Hussein/WireImageFabulous FlareFor an official visit to RAF Akrotiri in 2018, Kate rocked a business-casual look that included a forest green Smythe blazer paired with navy trousers and a white shirt.Stuart C. Wilson/Getty ImagesPleasant in PlaidKate hosted a 2018 holiday party in this festive plaid Emilia Wickstead skirt paired with a black Brora cardigan and slouchy black high-heel boots.Karwai Tang/WireImageBurgundy BeautyIn 2018, the royal visitsed UCL Developmental Neuroscience Lab at UCL London in a burgundy Paule Ka blazer and skirt paired with a black turtleneck, tights and heels.Karwai Tang/WireImageButtoned and BeltedWearing a chic blue coat dress with matching navy pumps and a black clutch, Kate stunned during the 2018 opening of McLaren Automotive's Composites Technology Centre.Samir Hussein/WireImageVelvet TrimKate attended a 2018 Remembrance Day service in a dark green coat with button detailing and a velvet trim collar, cuffs and pockets. She paired the jacket with a fuzzy headband and carried a black clutch.Samir Hussein/WireImageAquamarine DreamFor the 2018 Tusk Conservation Awards, Kate wore her aquamarine Jenny Packham gown (a stunning look she's worn before) paired with diamond chandelier earrings, a matching clutch and Jimmy Choo pumps.Neil Mockford/GC ImagesNice in NavyThe Princess of Wales arrived at Imperial War Museum in 2018 clad in a fitted blue sheath dress, nude heels and a matching nude clutch.Pool/Samir Hussein/WireImageRoyal Wedding StyleFor Princess Eugenie's 2018 wedding, Kate wore an all-fuchsia ensemble that included a stunning dress and matching fascinator from Alexander McQueen.Karwai Tang/WireImageChic in CheckIn 2018, the mother of three stunned in a burgundy accented Erdem check print dress paired with a matching clutch and heels.Neil Mockford/GC ImagesLady in LavenderKate looked typically elegant for a 2018 mental health summit in this beautiful purple Emilia Wickstead dress, nude heels and an Aspinal leather handbag.For the latest breaking news updates, click here to download the E! 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