Lauren Bacall for "To Have and Have Not" (1944), Bacall was so nervous that, to minimize her quivering, she pressed her chin against her chest, faced the camera, and tilted her eyes upward. This effect, which came to be known as "The Look", became another Bacall trademark, along with her sultry voice. Bacall's character in the film used Slim Hawks' nickname "Slim", and Bogart used Howard Hawks' nickname "Steve". The on-set chemistry between the two was immediate according to Bacall. She and Bogart (who was married at the time to Mayo Methot) began a romantic relationship several weeks into shooting. Bacall's role
Lauren Bacall with a picture opening could be represented there, standards had been so lowered" and didn't feel she had yet achieved the status of a major star, and was thereby unworthy of the honor: "I want to feel I've earned my place with the best my business has produced." At the time, Bacall was still under contract to 20th Century Fox. Following "How to Marry a Millionaire", she appeared in yet another CinemaScope comedy directed by Jean Negulesco, "Woman's World" (1954), which failed to match its predecessor's success at the box office. In 1955 a television version of Bogart's breakthrough film,