The annual display of British military might serves as a seasonally tweaked birthday celebration for the sitting monarch.

Trooping the Colour in the U.K. is a celebration of the reigning monarch's birthday. It's held every year in June, regardless of when their actual birthday is, and it involves a lot of fanfare with a parade and a dramatic RAF flyover.

Trooping the Colour—the annual celebration of the monarch’s official birthday—Queen Camilla embraced timeless elegance. In honor of this year's festivities, the royal opted for an understated ensemble and donned a white silk crepe midi dress embroidered with silver detailing by Anna Valentine.