Maurice Chevalier’s randy Viennese lieutenant is enamored of Claudette Colbert’s freethinking, all-girl-orchestra-leading cutie. Yet complications ensue when the sexually repressed princess of the fictional kingdom of Flausenthurm, played by newcomer Miriam Hopkins, sets her sights on him. The Smiling Lieutenant is a delightful showcase for its rising female stars, who are never more charming than when Colbert tunefully instructs Hopkins, “Jazz Up Your Lingerie.”