Incendiary Blonde

Incendiary Blonde is a 1945 American musical drama film biography of 1920s nightclub star Texas Guinan. Filmed in Technicolor by director George Marshall and loosely based on a true story, the picture stars actress Betty Hutton in the titular role.

A tomboy named Mary Louise Texas Guinan lands a job with a Wild West show after proving she can ride a bucking bronco. The rodeos new owner is Romero Bill Kilgallen, who doubles Texass pay after the attention she gets from saving a toddlers life from a runaway wagon at a show.Tim Callahan comes along, looking for a job as the shows press agent by promising not to tell what he has found out, that Texass heroism was a staged act, with a midget pretending to be the endangered child. ........

Source: Wikipedia