Description - Dark denim full length coat from the 70s. I found an ad from 1974 for Halston's denim rain coats, so I think that might be what this. In the ad it mentions wearing them as a dress or coat and I definitely think this would look cute as a dress as well. It buttons up the front and on the cuffs. There are inseam pockets on both sides. 

Details

Brand - Halston Three

Size - approximately a modern Small-Medium but please check all measurements to ensure fit

Shoulders - 16" across

Chest - 20.5" pit to pit 

Sleeves - 23.5" from shoulder seam

Waist - approximately 20.5" across

Hips - approximately 24" across

Length - 44.25"

Condition - I found a small fabric flaw in the middle of the back.