Which movie was the debut for the holiday hit, "Have Yourself a Merry Little Christmas"?

This 1944 classic takes place in the lead-up to the 1904 World's Fair in St. Louis. It starred Judy Garland and Margaret O'Brien. In the film, Garland debuted, "Have Yourself a Merry Little Christmas" as well as "The Trolley Song" and "The Boy Next Door."

Asked by Kendra Whitmire · Last updated 5 years ago · 259.9K views · SOURCE