All rise, Princess Anne is here!
WATCH: PRINCESS ANNE WATCHES THE 41 ROYAL GUN SALUTE
The 68-year-old chose a tartan coat for the occasion, and some wild accessories!
For day-two of her mum's festivities, Anne pinned a gold horse broach to her coat and threw on a bizarre brown hat, fanned with beige feathers.
Very Yankee Doodle dandy!