Niagara (film) compatibility problems with "three-strip" but not with Eastmancolor). Monroe was given first billing in "Niagara" which elevated her to star status. Her following two films of that year, "Gentlemen Prefer Blondes", with Jane Russell, and "How to Marry a Millionaire", with Betty Grable and Lauren Bacall, were even bigger successes. Ray and Polly Cutler (Showalter and Peters), on a delayed honeymoon at Niagara Falls, find their reserved cabin occupied by George and Rose Loomis (Cotten and Monroe). Rose tells them that George is asleep and has recently been discharged from an Army mental hospital after his war service in Korea.
Jayne Mansfield biggest successes, both critically and financially, earning more than "Gentlemen Prefer Blondes" had three years before. Soon afterwards, Fox started promoting Mansfield as "Marilyn Monroe king-sized", attempting to coerce Monroe to return to the studio and finish out her contract. Mansfield had become one of 20th Century Fox's main sex symbol actresses. Mansfield next played a dramatic role in 1957's "The Wayward Bus", an adaptation of John Steinbeck's novel of the same name. With this film, she attempted to move away from her "blonde bombshell" image and establish herself as a serious actress. The film enjoyed moderate box office success,