Peter Phillips and Autumn Phillips are calling it quits.

On Tuesday, Queen Elizabeth II's grandson announced that he and his wife are separating after 12 years of marriage. In a statement from the couple, it was revealed that the 42-year-old royal, who is the son of Princess Anne and Her Majesty's eldest grandson, had informed the royal family of their decision last year. As parents of daughters Savannah, 9, and Isla, 7, Peter and Autumn shared that they wish to proceed with their divorce in an amicable way for the sake of their young girls.