Two real-life events were incorporated into the plot of the 1951 MGM musical . One, the marriage of Fred Astaire's sister Adele to a British nobleman had occurred years earlier; the other, the wedding of England's Princess Elizabeth and Prince Philip was only four years in the past. MGM would probably have gotten out closer to the Elizabeth-Philip nuptials, but the picture had leading-lady problems; every girl who was cast either became pregnant, ill, or otherwise unavailable. Finally, Jane Powell was cast as the sister and partner of American-entertainer Fred Astaire. The plot has Astaire and Powell heading to Merrie Olde England to perform at the palace. Once they've arrived, Powell breaks up the act when she falls in love with blueblooded Peter Lawford. Astaire himself finds romance in the form of Sarah Churchill (daughter of Sir Winston), and the four happy campers gleefully attend the titular Windsor Castle wedding. Also in the cast is Albert Sharpe, fresh from his Broadway triumph in , and Keenan Wynn, hilarious as twin cousins. The plot is so light that it threatens to float away at times, but sticks in the memory thanks to its first-rate musical numbers. The Astaire/Powell duets are entertaining enough; the real magic, however, occurs in Astaire's two solos: the hat-rack duet and the now-legendary tap-dance on the ceiling (even knowing how this cinematic legerdemain was accomplished does not detract from its brilliance and virtuosity). Because it has slipped into public domain, is one of the most easily accessible of all the Fred Astaire musicals.