1. In 1980, the French version of the musical "Les Misérables" was staged at the Paris Arena, with an audience of 500,000. Later, Cameron Mackintosh, a gold medal producer of musicals, changed the French version into an English version. The English version of the musical was staged in London in 1985 and achieved great success and is regarded as a classic of musicals. Cameron Mackintosh also serves as the film's producer.

2. Anne Hathaway and Hugh Jackman sang together at the Oscars hosted by Jackman. At the Oscars hosted by Hathaway and James Franco, Hathaway sang "On My Own," adapted from the musical "Les Misérables." This is a complaint about Hugh Jackman not acting with her for the second time.

3. In order to play Fantine, who lives in poverty, Anne Hathaway lost 20 pounds, or about 20 kilograms. When asked how she lost so much weight in such a short period of time, Anne Hathaway remained tight-lipped. She said that her method would pose a threat to life and health, so she was unwilling to publish her method and did not want young women to follow suit.

4. In order to play the prisoner Jean Valjean, Hugh Jackman lost a considerable amount of weight. According to reports, he lost 30 pounds (more than 27 pounds). And he also grew a messy beard. The crew filmed scenes of Jean Valjean in prison at the beginning so that Hugh Jackman could shave off his beard and regain his normal weight, because later in the film, he will become a wealthy businessman and mayor.

5. In the film, Anne Hathaway’s character sold her hair. In real life, Hathaway did cut off her long hair.

6. Anne Hathaway was first associated with the role of Fantine in 1987, when she was still a child, and her mother Kate McCauley Hathaway was in "Les Misérables the Musical" She played the role of Fantine on her US tour.

7. Many years ago, Anne Hathaway had the opportunity to star in the musical "Phantom of the Opera" on Broadway. But she turned down the role at the time because she was filming "The Princess Diaries" at that time.

At the age of 8, Amanda Seyfried played the role of childhood Cosette in a concert.

9. Helena Bonham Carter and Sacha Baron Cohen, who played the couple in the film, had starred together in another musical "Sweeney Todd."

10. After months of auditions and rehearsals, Samantha Backus played the role of Eponine in the film. She previously played the role in the musical's 25th anniversary version.

11. Schoenberg and Alain Bubier, who wrote the music and lyrics for the musical, wrote a new song specifically for the film. Moreover, Schoenberg also re-composed the music for the film.

12. Colm Wilkinson plays the role of Bishop in the film. He has played Jean Valjean in both London and New York stages.

13. Many actors from the musical of that year appeared in this film.