Lauren Bacall in the script was originally much smaller, but during filming, her part was revised multiple times to extend it into the lead part that it became in the released film. Once released, "To Have and Have Not" catapulted Bacall into instant stardom, and her performance became the cornerstone of her star image, the impact of which extended into popular culture at large, even influencing fashion, as well as film-makers and other actors. Warner Bros. launched an extensive marketing campaign to promote the picture and to establish Bacall as a movie star. As part of the public relations push, Bacall made
Lauren Bacall manners, and taste. At Hawks' suggestion, Bacall was also trained to make her voice lower and deeper, instead of her normal high-pitched, nasal voice. Hawks had her, under the tutelage of a voice coach, lower the pitch of her voice. As part of her training, she was required to shout verses of Shakespeare for hours every day. Her height, at 5 feet 8½ inches (1.74 m), unusual among young actresses in the 1940s and 1950s, also helped her stand out. Her voice was characterized as a "smoky, sexual growl" by most critics, and a "throaty purr". During her screen tests