A day after Kate Middleton had to cancel her appearance, the royals were out in full force at the festival of horse racing

The Royal Ascot is in full swing, and you know what that means: a week of high-stakes horse racing and high-fashion royal sightings. Everyone from Zara Tindall to Prince William showed up looking sharp,

Stone called Queen Camilla's decision to wear the brooch a "deeply symbolic choice" as "emeralds represent rebirth, renewal, and enduring love." The Cambridge Cluster Emerald and Diamond Brooch is estimated to be worth as much as $50,000, according to Stone.