Simularities to 1988 film Big Business
I recall on an episode of Entertainment Tonight,Our Relations being compared to a 1988 movie Big Business,where Bette Midler and Lily Tomlin played the same kind of double role.
Bette and Lily played two sets of twins that were mismatched at birth.Years later in their adulthood,both pairs accidenlty wind up in New York City,where hilarious cases of mistaken identity occur.Toward the end of the film,both pairs come face to face in trick photography.
Sound Familiar?
It's been assumed by some that the basic plot for Big Business was stolen from Our Relations.