Delightfully Dangerous(1945)

Young Sherry Williams dreams of having a singing career, and she idolizes her older sister Josephine, who has gone to New York to perform on the stage. When Sherry is distraught just before performing at her school, a visiting Broadway producer encourages her by telling her positive things about her sister. Soon afterwards, Sherry decides to make a surprise trip to New York to visit Josephine - but what she finds there is not at all what she expected