We all know royals such as Kate Middleton, Meghan Markle, and Queen Letizia of Spain are a few of the best-dressed women in the world, but it's no secret their partners also have ultra-stylish wardrobes. In fact, there are a number of royal couples, past and present, who have donned fashionable ensembles during their time as monarchs. Hollywood star Grace Kelly, for example, was one of the most stylish women in the '50s. In 1956, the actress became the Princess of Monaco when she married Prince
