Stunning dress for colder seasons, 3/4 sleeve(sleeve length 18.5), elastic velour, very rich color. 
Length 47”, armpit to armpit 14.25”, hip area 17.5” measured laying flat. 
For size 4 it will fit looser, for size 6 it will snug you more, but will fit both sizes. 
I am sure you will love it! 
Rare find, selling it cheap!