Kate Middleton attended her first St. Patrick's Day parade as the Colonel of the Irish Guards.

She was accompanied by Prince William, who previously held the position.

Kate wore a green Catherine Walker & Co coat dress and matching hat with the Irish Guards brooch.

The brooch is loaned to royals associated with the military unit.

William gave a speech and expressed sadness at the end of his time as Colonel.

He praised the families of the troops for their support.

Kate thanked William and expressed her commitment to the role.

She promised to listen, support, and champion the troops.

Kate wished everyone a happy St. Patrick's Day.