The Jazz Cinderella(1930)

Intending that her son, Herbert, marry debutante Mildred Vane, Mrs. Consuelo Carter is most dismayed when she learns that Herbert has fallen in love with Pat Murray, a model in Darrow's dress shop. Pat's emphatic refusal to take Mrs. Carter's "suggestion" that she give up Herbert leads to her being fired, and she reluctantly accepts Herbert's invitation to weekend at the Carter country home. Finally realizing the hopelessness of the situation, Pat makes a spectacle of herself at a party; but Herbert is not fooled, and their love triumphs.