I've been asked to draft an 1860's shirt pattern for a gentleman with a 56 chest - and 62 inch waist.
The draft I usually use (DeVere, 1859) has straight side seams, and has the front gathered into the bottom of a pleated bosom. I can let out the gathers, but that will only make the chest and waist equal.
Are any costumers here aware of a period shirt draft for a corpulent man?
Without one, how would a modern shirtmaker approach this? Slant the side seams out at the waist, or something else?