Auntie Mame with Rosalind Russell.
Again, it’s not specifically a Christmas movie, but there’s the turning point during the depression when, just before Christmas, Mame meets the (latest) love of her life one Beauregard Jackson Pickett Burnside.
We love the 1958 version with Rosalind Russell.
But equally grand is the 1974 musical version with Lucille Ball (based on the stage play) which introduced the song “We Need a Little Christmas.”