The highlight of her ensemble was the rare Ruby and Diamond Floral Bandeau Necklace, an opulent piece drawn from the Royal Family’s private jewelry collection. Featuring deep crimson rubies and dazzling diamonds arranged in a floral motif, the necklace turned heads and reignited admiration for the princess’s timeless style.

Royal fans may recall that Catherine first debuted this spectacular necklace a decade ago at a state banquet honoring the King and Queen of Spain at Buckingham Palace. Then, as now, the necklace was paired with a delicately crafted blush pink gown by Marchesa, known for its romantic designs and refined silhouettes.

The gown, with its illusion lace neckline, sheer sleeves, and flared cuffs, showcased Catherine’s flair for blending regal sophistication with modern femininity.

Nods to Diana: Tiara and Earrings with Meaning

Catherine completed her look with several historic pieces closely associated with her late mother-in-law, Princess Diana. She wore the iconic Lover’s Knot Tiara, a favorite of Diana’s and a symbol of enduring royal tradition. Her earrings—known as the Collingwood Pearl and Diamond Drops—once belonged to Diana as well, adding a deeply personal and sentimental layer to her appearance.

Together, the jewels formed a regal ensemble that paid homage to royal lineage while highlighting Catherine’s growing role as a queen-in-waiting.

A Grand Arrival and Royal Atmosphere

The Prince and Princess of Wales arrived at Buckingham Palace in elegant fashion, greeted by cheers from onlookers and the anticipation of distinguished guests gathered in the palace’s Grand Ballroom. Inside, the mood was celebratory, as the royal couple made their entrance with poise and warmth, engaging in conversation and laughter with guests throughout the evening.

Prince William, ever the attentive husband, was seen glancing at Catherine with admiration and pride—moments that did not go unnoticed by those in attendance.

Catherine’s Fashion Evolution: Marchesa Magic

This isn’t the first time Catherine has turned to Marchesa for a standout occasion. In 2017, she wore a memorable claret-hued midi dress from the designer’s Resort collection for the opening night of 42nd Street at London’s Theatre Royal Drury Lane. That dress, like her latest appearance, featured vintage-inspired tailoring reminiscent of Dior’s iconic “New Look,” and was subtly altered to suit Catherine’s signature preference for elegant modesty.

With custom sleeves and delicate lattice and rosette detailing, Catherine’s fashion choices continue to reflect her ability to merge contemporary design with royal refinement.

A Queen in the Making

Catherine’s appearance at the banquet was more than a sartorial triumph—it was a moment of grace, resilience, and continuity. Every element of her look, from her historic jewels to her refined gown, reinforced her position as a central figure in the modern monarchy.

As she continues to carry out royal duties with poise and quiet strength, it’s clear that Catherine is not just admired for her style—but for the way she effortlessly blends royal tradition with modern influence.

With each public engagement, the Princess of Wales further cements her status as a beloved royal icon and future queen, drawing admiration not only for what she wears, but for who she is.