Wardrobe staple alert!  Deena wears the large and the 1XL in this top, it's oversized and is a great layer.
No size guide for this one, fits true to size, on the oversized edge of life. 
Deena is in the large. Alex is in the 2X.
 
Front Body Length 31'5 " | Chest 56.5" in size 1XL
Length 29.5" | 1/2 Chest(1" below armhole) 25" in size S