I'm trying to find a story that goes like this "When the wife and the ex wife accidentally buy the same dress"?

my friend told me this story and i want to find the whole thing cause i want to tell it again, the story is about When the wife and the ex wife accidentally buy the same dress, but the wife wont return it so the ex wife wears it to the rehearsal dinner. would be a great help if someone could tell me where to find it :)