The Prince and Princess of Wales celebrated St. Patrick's Day with the Irish Guards on Friday.

Kate attended her first march as Colonel of the regiment, replacing Prince William.

Kate presented traditional sprigs of shamrock to officers and guardsmen, and to the Irish wolfhound regimental mascot.

The outgoing Colonel William gave an emotional speech, expressing pride in the regiment and support for his successor.

Kate pledged to support and champion the regiment, and expressed admiration for their dedication and sense of humor.

The couple posed for a group photo with the Irish Guards, and Kate received posies from two young girls.

The Junior Ranks dining hall greeted the Prince and Princess with three cheers, and soldiers drank Guinness and Fosters.

William wore a Blues Jumper, Frock Coat, and Sword for the parade, while Kate wore a teal button-up coat and matching hat.

Kate's gold shamrock brooch, loaned to royal ladies associated with the regiment, completed her outfit.