So Long Letty is a 1929 American sound (All-Talking) pre-Code musical comedy directed by Lloyd Bacon and starring Charlotte Greenwood, reprising her role from the 1916 Broadway stage play.

[3][4][5] The story had previously been filmed as a silent under the same title in 1920 with Colleen Moore.

When he finds Tommy, he mistakes Grace for his wife and likes her and the way she keeps a clean house.

To get a big check from Uncle Claude and to see how life is with the other, the two couples switch spouses for a week.

Like most of its genre at the time, it was financially disappointing and "barely broke even" despite the "glorious rowdy Charlotte Greenwood".