I know the scene and the "over skirt" of which you speak. I've not seen a pattern, that I recall, for something like that BUT will holler should I come across something that MIGHT work for you. What she wore looks like it was crocheted rather than knit.
While not like Russo's in the movie, something perhaps along these lines?
This one appears to be more along the correct style of what Russo wore. Note that this one is crochet.