from Wikipedia
Tom and Gerry Jeffers (Joel McCrea and Claudette Colbert) are a married couple in New York City who are down on their luck financially, which is pushing the marriage to an end. But there is a deeper problem with their relationship, just hinted at under the opening credits in the prologue, and only disclosed at the end.
In the prologue Claudette Colbert is bound and gagged in a closet, but a second later appears in a wedding dress. This scene is cross-cut with groom Joel McCrea hurriedly changing from one formal suit to another while rushing to church for the wedding. The last scenes finally reveal that both of the original fiancés have identical twins. Both twins, trying to steal their sibling's intended, inadvertently married each other instead.
everything is in the first ( chaotic, like I said ) 2 minutes, the prologue ; the real bride in her slip at 0:32 and later
https://www.youtube.com/watch?v=pa3KGMFdCGE
