Millie Dillmount, a fearless young lady fresh from Salina, Kansas, determined to experience Life, sets out to see the world in the rip-roaring Twenties. With high spirits and wearing one of those new high hemlines, she arrives in New York to test the "modern" ideas she had been reading about back in Kansas: "I've taken the girl out of Kansas. Now I have to take Kansas out of the girl!"
Unfortunately the movie Thoroughly Modern Millie is not yet available on Disney Plus.
| Writing | Richard Morris | Writer |
| Directing | George Roy Hill | Director |
| Costume & Make-Up | Sheryl Deauville | Assistant Costume Designer |
| Sound | Jimmy Van Heusen | Songs |
| Writing | Sammy Cahn | Lyricist |
| Crew | Hayward Soo Hoo | Stunts |
| Crew | Russell Saunders | Stunts |
| Crew | Lee Faulkner | Stunts |
| Crew | Jerry Brutsche | Stunts |
| Crew | Paula Dell | Stunts |
| Production | Ross Hunter | Producer |
| Art | George C. Webb | Art Direction |
| Art | Howard Bristol | Set Decoration |
| Camera | Russell Metty | Director of Photography |
| Editing | Stuart Gilmore | Editor |
| Sound | Elmer Bernstein | Original Music Composer |
| Art | Alexander Golitzen | Art Direction |
| Costume & Make-Up | Jean Louis | Costume Design |
| Art | Solly Martino | Props |
| Camera | Kenneth Smith | Grip |
