And Baby Makes Three (1949)

Jackie Walsh, divorced from Vernon Walsh, faints just before her marriage to Herbert Fletcher and learns she is pregnant, and ex-husband Vernon is the father-to-be. To win their legal battle over the custody of the baby-to-be, Vernon decides to marry ex-girl friend Wanda York. Jackie is regretting the divorce and decides to discourage Wanda by telling her she is going to have triplets.