Popsugar Celebrity The Royals Grace Kelly and Prince Rainier III Pictures Grace Kelly and Prince Rainier III's High Society Romance, in Pictures May 29, 2017 by Kelsie Gibson View On One Page Photo 9 of 21 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 9 April 1956 Grace waves to the crowd as the pair leaves Saint Nicholas Cathedral after their wedding ceremony. Previous Next Start Slideshow The RoyalsGrace Kelly