Edie's style was young and glamorous. She wore everything mini, and even wore ballet tights as bottoms. But I think to really imitate Edie's look you must recreate her dramatic eyes.
I found this really great makeup tutorial a few months ago when I was Edie for Halloween.
1. Little black or white mini dress (or skirt)
2. Black tights
3. T-strap pumps
4. Long shoulder sweeping earrings