American actress Grace Kelly arrives at Monaco Cathedral for her wedding to Prince Rainier III of Monaco Hulton Archive/Getty Images Before Charles and Diana, William and Kate, or Harry and Meghan, there was another royal coupling that was lauded around the globe: that of the Hollywood megastar, Grace Kelly, and the dashing European prince, Rainier III of Monaco. Read More Grace Kelly’s wedding dress had a fascinating history with ties to her Hollywood career Prince Rainier of Monaco’s wedding to his Hollywood bride 69 years ago was the stuff of fairytales.