Here is a cool vintage button down shirt by KMart. 65% poly and 35% cotton. Great plaid design in green, gray, burnt orange, and white. Seven button front and a pocket on the left breast. Slightly pilly throughout. Otherwise, this one is in amazing condition with years of life left! Thin, soft, and comfy. Here are the measurements. (refer to the last pic above to see how I measure shirts)

Chest (armpit to armpit) 24"
Shoulder to end of sleeve (including cuff) 9"
Length 32"

This item is sold from a vintage boutique in Roanoke, VA.