How to Marry a Millionaire (1953)
Co-starring Marilyn Monroe and Betty Grable, the unstoppable trio were on the prowl for rich husbands in this fun romantic comedy. Of her famous co-stars, Lauren has said: "Betty Grable [was] one of the funniest, most adorable women. I was crazy about her. And Marilyn [was] just sweet. There was nothing mean about Marilyn."