“What a dazzling look. That dress is so cute. It flatters her coloring and figure and her legs look fab,” added another. While a third shared: “Wow! They both look spectacular. I love, love, love that dress.”

For the occasion, Zara, 44, opted for the Rebecca Vallance Nemy Bow Mini Dress in navy, a fresh and flattering new addition to her wardrobe. The tailored silhouette, complete with its elegant bow detailing, offered a sharp yet feminine take on contemporary race-day dressing.

The royal balanced the bold dress with sleek silver Belaire court shoes from Dune London, injecting a proudly British fashion moment into her Australian ensemble.

Her accessories elevated the look even further, beginning with a dazzling crystal-covered Jimmy Choo clutch.

While Jimmy Choo was born in Malaysia, the luxury house is firmly British, having been founded in London, where the designer built his career and later received an OBE.

The glittering clutch added a red-carpet shimmer that perfectly suited the high-octane atmosphere of Magic Millions. King Charles’s niece also wore her own Calleija Coronet Suite white gold bracelet, lending a personal and sentimental touch to the polished outfit.

The overall look felt sleek, confident and quietly glamorous, striking a perfect balance between race-day sophistication and evening elegance. Zara’s softly styled hair and glowing makeup enhanced her natural radiance without overpowering the statement outfit.

What made the ensemble particularly striking was how seamlessly Zara blended British fashion houses with an Australian designer she has made her own. It reflected her growing influence on the international fashion scene.

With her cousins also championing the same designer, it feels like a subtle royal style movement in the making - this Magic Millions look proved she is as confident in couture as she is at the racetrack.