When two caddish band members (Jack Lemmon and Tony Curtis) inadvertently witness the St. Valentine's Day Massacre while paying on a bet, their surest way out of town (and to stay gainfully employed) is to don a dress and hop a train as members of an all-girl band bound for a gig in Miami. On board they meet a voluptuous fellow member of their company (Marilyn Monroe) and are both immediately smitten. While Lemmon becomes distracted by an infatuated millionaire (Joe E. Brown, hysterical), Curtis feigns his way as his own self-made man to win the girl's affections at the same time as the mob hosts a convention in town. Billy Wilder's witty and hilarious seminal classic hosts finely tuned performances from Lemmon and Curtis and features Monroe at her screen sexiest and a finely tuned acting turn as well.