This thing is a beast!!! Oversized to begin with, it is now packed full of 800 fill white goose down and is simply massive!! It is by far one of the best I've overfilled and is incredibly puffy. The measurements are as follows. 
Chest:28" flat pit to pit (yes 56") 
Shoulders: 24" 
Sleeve: 32" collar to cuff 
Length: 27"