Curtis’s film is among his finest works... and proves to be both an amusing and entertaining comedy. Many consider this movie to be one of the greatest comedies ever made. I'm not so sure about that, though. In my view, it's a worthwhile comedy, successfully engaging its audience, and there’s no denying its status as a classic film. Starting from that solid foundation and elevating it to the level of best or among the best feels like an overstatement. But that’s just my opinion. The story unfolds during Prohibition, when illegal bars were a significant source of income for gangsters. The script uses this historical context to create a reasonably well-written and interesting narrative about two jazz musicians who inadvertently witness a massacre—a mob killing of rivals in Chicago. This incident was inspired by the real Valentine's Day Massacre. Fearing for their lives, they disguise themselves as women and join an all-female jazz orchestra traveling by train to perform at a hotel. Naturally, that’s when the film’s funniest moments begin, centered around the characters maintaining their charade while romantic complications arise. Beyond a strong script and sharp dialogue, the movie benefits from excellent performances by Tony Curtis and Jack Lemmon, the two leading men. For me, this is one of the most compelling films in both actors' careers, and it’s enjoyable to watch them interact. I also appreciated the contributions of George Raft and Joe E. Brown, who bring charm and humor to the film's conclusion. Pat O’Brien delivers a solid performance as well, even if he doesn't quite match his colleagues. However, the film is likely more familiar to audiences because of the female lead, Marilyn Monroe. I wasn’t particularly impressed with her work here; she was an exceptional singer, and her best moments are when she’s singing. I never considered her a truly talented actress, though (apparently she had trouble memorizing lines, and the director reportedly vowed never to work with her again), and her performance is distracting, portraying the character as both cunning and somewhat foolish. The film doesn't prioritize technical innovation, but it does feature high-quality sets and costumes, effective special effects, and a fitting musical score. It establishes a comfortable pace from the start that makes the two-hour running time feel effortless. The cinematography is also well done, with standard techniques that make good use of the chosen locations.

Source on TMDB