Prince William and Kate Middleton attended the St. Patrick's Day Parade at Mons Barracks in Aldershot, England.

Kate looked stunning in a teal Catherine Walker & Co coat dress, matching hat, and heels, and a beautiful brooch.

William proudly wore his shamrocks front-and-center on his military hat.

During the parade, William and Kate posed with those in the Irish Guards and gave speeches.

King Charles III appointed Kate as honorary Colonel of the unit, succeeding William.

Kate expressed her honor to step into the role and pledged to support the regiment.

William spoke about his pride in the regiment and his ongoing commitment to supporting their efforts.

The royals celebrated St. Patrick's Day by sipping pints of Guinness beer, a beloved Irish tradition.

They attended the procession to respect the holiday and support the troops, demonstrating their royal obligations and public duty.