Mitzi Gaynor plays legendary vaudeville headliner Eva Tanguay, whose signature tune was the bouncy "I Don't Care." The film's actual producer George Jessel costars as "himself;" the gimmick is that Jessel wants to produce a biopic based on Tanguay, but can't get a handle on the story until he interviews all those who remember the lady. This throughline allows Gaynor to impersonate Tanguay without the added encumbrance of a plot. Well, there is a love story involving Tanguay and her vaudeville partner (David Wayne), and some welcome comic relief from "professional neurotic" Oscar Levant, but otherwise The I Don't Care Girl is more a revue than a movie. At the end, inveterate scene-stealer George Jessel shows up backstage during one of the flashback sequences, "Just to see how the story will turn out."