References to other A.H. films
There were a couple early in the film but I can't remember exactly what they were. But here's two others:
Mention of Sing Sing prison - Breakfast at Tiffany's
Hepburn in red dress going down stairs in the final scene - Funny Face
The final one, at least, seems very clear. Others may be coincidental. However, I suspect the writer deliberately wrote in these references as there were several of these.
If you picked up on anything then please add to this!