Gentlemen Prefer Blondes is a 1928 silent film directed by Mal St. Clair, cowritten by Anita Loos based on her novel, and released by Paramount Pictures. No copies are known to exist, and it is now considered to be a lost film. The Broadway version Gentlemen Prefer Blondes starring Carol Channing as Lorelei Lee was mounted in 1949. It was made into the film Gentlemen Prefer Blondes with Jane Russell as Dorothy Shaw and Marilyn Monroe as Lorelei Lee in 1953.
Source: Wikipedia