Camilla, who until now has been described as queen consort, is given equal billing on the ornate medieval style invitations that will be sent to more than 2,000 guests and were unveiled on Tuesday.
Charles and Camilla met long before the future king married Diana in 1981 and their relationship continued throughout the tumultuous marriage.
The palace released a few more details about the coronation on Tuesday, announcing that 9-year-old Prince George, the king’s eldest grandson, who is second in line to the throne, would be one of four pages of honor attending the monarch during the service.