Gentlemen Prefer Blondes, the 1953 20th Century Fox movie is a musical comedy/romance directed by Howard Hawks starring Jane Russell and Marilyn Monroe, with Charles Coburn, Elliott Reid, Tommy Noonan, Taylor Holmes, and Norma Varden.
Note that it may still be copyrighted in jurisdictions that do not apply the rule of the shorter term for US works (depending on the date of the author's death), such as Canada (50 p.m.a.), Mainland China (50 p.m.a., not Hong Kong or Macao), Germany (70 p.m.a.), Mexico (100 p.m.a.), Switzerland (70 p.m.a.), and other countries with individual treaties.