_The Philadelphia Story_ (1940, I think) - Katherine Hepburn, Jimmy Stewart,
Cary Grant. What can I say? A nearly perfect movie, all about a wedding
which ends with a different wedding happening.
_His Girl Friday_ Another great Grant film in which he gets in the way of a
wedding to lure Rosalind Russell (also superb) back to the world of reporting.
_Royal Wedding_ Not that much actually about a wedding in this Astaire vehicle,
but a wedding provides the excuse for the plot.