Anne, the Princess Royal, is King Charles' younger sister.

The Gold-Stick-in-Waiting position has been around since the 1400s.

Princess Anne wore her army uniform for her role as Gold-Stick-in-Waiting.

Princess Anne on horseback

The uniform included a hat, a dark green cloak, sashes, medals, and more regalia.

The uniform has also successfully kept Anne offThe List’s coronation worst-dressed list.

However, one of her uniform’s accessories caused a stir online due to its interesting placement.

King Charles and Princess Anne walking

People on Twitter have come up with a hashtag to describe the situation.

She can be relied on for complete discretion and unconditional love.

Anne is wise, intelligent, incredibly plugged into the modern United Kingdom."

The article also calls her Charles' “secret weapon.”