Fred Astaire and Jane Powell
Jane Powell and Fred Astaire starred in the colorful and fun Royal Wedding in 1951. The musical was directed by Stanley Donen and also stars Peter Lawford, Sarah Churchill, and Keenan Wynn.
While I love this movie, I would have LOVED to have seen a musical featuring these two musical legends as a couple as opposed to siblings. I think the same thing each time I see this one!