princessgracekelly1956: Grace Kelly and Prince Rainier dance at the Imperial Ball at the Waldorf-Astoria in New York City on January 6, 1956, the day after their engagement was announced. (Photo by Ralph Morse)
princessgracekelly1956: Grace Kelly and Prince Rainier dance at the Imperial Ball at the Waldorf-Astoria in New York City on January 6, 1956, the day after their engagement was announced. (Photo by Ralph Morse)
