Kay Nelson was costume director for Leave her to Heaven, "Boomerang" , and Miracle on thirty fourth Street a perennia Christmas favorite originally released under this name
Kay Nelson:  Over the next 17 years she provided the costumes for such films as "Leave Her to Heaven" (1945), "Boomerang", "Miracle on 34th Street" and "Gentleman's Agreement" (all 1947) and "A Letter to Three Wives" (1949). Miracle on 34th Street: Miracle on 34th Street (initially released in the United Kingdom as The Big Heart) is a 1947 American Christmas comedy-drama film written and directed by George Seaton and based on a story by Valentine Davies.
The Big Heart