Dancer and choreographer Stanley Donen had co-directed On the Town two years earlier with Gene Kelly the success of which gave him this film, his debut as a solo director.
Loosely based on the real life experience of Fred Astaire whose sister and dancing partner, Adele, married an English peer and designed to cash in on public interest in the 1947 marriage of Princess Elizabeth and Prince Philip (stock footage of which is interpellated into the film), Royal Wedding tells the story of American sibling song-and-dance team Tom (Astaire) and Ellen (Jane Powell) Bowen who are booked for a London season at the time of the eponymous event. Both prioritizing career over marriage they are forced to re-evaluate their commitment when Ellen falls for the dashing Lord John Brindale (Peter Lawford), and Tom becomes smitten with the elegant Anne Ashmond (Sarah Churchill, daughter of Winston).
Unfortunately the film is a dull affair. Not only is Astaire thirty years older than Powell, making for an unlikely double act, but Astaire essentially reiterates his schtick from his classic 1930s films with Ginger Rogers. The panache of those films however is well and truly absent here with the screenplay by Alan Jay Lerner being routine and its would-be bonhomie forced.