Meghan Markle walks down the aisle as she arrives for her wedding ceremony to Prince Harry at St. George's Chapel in Windsor Castle in Windsor, England, on May 19, 2018.

The son of British royalty and the daughter of middle-class Americans wed Saturday in a service that reflected the groom’s royal heritage, Markle’s biracial roots and the pair’s shared commitment to putting a more diverse, modern face on the monarchy.