Two Girls and a Sailor is a 1944 American musical film directed by Richard Thorpe and starring Van Johnson, June Allyson and Gloria DeHaven.
Set on the American homefront during World War II, it's about two singing sisters who create a lavish canteen to entertain members of the military, thanks to financial contributions from a mysterious donor.
The picture features a host of celebrity performances, including Jimmy Durante doing his hallmark "Inka Dinka Doo", Gracie Allen (in her final film role), and Lena Horne.
Jean points out to Johnny an unused nearby warehouse they wish they could make into a canteen to entertain the troops.
As the two sisters explore the dusty building, they discover that Billy Kipp, an old vaudeville performer they knew as kids, has been squatting there ever since his wife left him and took their infant son many years ago.