Grace Kelly and Prince Rainier wed, St. Nicholas Cathedral, Monaco, April 19, 1956. Thomas D. McAvoy—The LIFE Picture Collection/Getty Images ...

Grace Kelly and Prince Rainier III's love story is a real-life fairy tale. The actress first met the royal at the Cannes Film Festival in April 1955, and a year later they tied the knot in an ...

She had Oliver when she met and subsequently married Prince Rainier, so this was likely well into her acting career. It's a surprisingly low-key and candid moment from the glamorous star. Circa 1955-6 ...

The first of 10 shots show Kelly, then 26, on her wedding day to Prince Rainier III in April 1956, which led to her retiring from acting to take on royal duties. 5 ...

Prince Rainier III of Monaco has that bridegroom-to-be look as his fiancee, Grace Kelly, shows her engagement ring of interlocking diamonds and rubies to her mother, Mrs. Margaret Kelly, during a ...

Prince Rainier III of Monaco, Grace Kelly, and their children Albert, Caroline and Stephanie, in Monaco in 1969. Alfredo Panicucci/Mondadori via Getty Images ...

Life wasn’t always a fairytale for Hollywood sweetheart Grace Kelly. Before tying the knot with Prince Rainier III of Monaco, the Oscar winner allegedly had a promiscuous past as she charmed a ...

Rare Photos of Grace Kelly and Prince Rainier. The Monaco royals 55th wedding anniversary is celebrated by LIFE with unpublished photos. By Sarah Durham Wilson. Published on April 19, 2011 09:30AM ...