Since the beginning of her career at 20th Century-Fox, Darnell had been very positive about her frequent co-star Tyrone Power. In a 1939 interview, she expressed her interest in starring opposite Power in "Johnny Apollo" (1940). Rationalizing why she was not cast, Darnell said: "It's a man's part and the girl's role is only incidental." Dorothy Lamour was cast, instead. Nevertheless, Darnell had her way, as she was assigned to the female lead opposite Power in the light romantic comedy "Day-Time Wife" (1939). Although the film received only slightly favorable reviews, Darnell's performance was received positively, with one critic saying: "Despite her apparent youth, turns in an outstanding performance when playing with popular players." Another critic wrote: "little Linda is not only a breath-taking eyeful, but a splendid actress, as well." "Life" magazine stated that Darnell appeared to be 22 and was "the most physically perfect girl in Hollywood". Following the film's release, she was cast in the drama comedy "Star Dust" in December 1939. The film was hailed as one of the "most original entertainment idea[s in years" and boosted Darnell's popularity, who was nicknamed "Hollywood's loveliest and most exciting star". "Variety" said: "Miss Darnell displays a wealth of youthful charm and personality that confirms studio efforts to build her to a draw personality." Her studio contract had been revised to allow Darnell to earn $200 a week.