Here is an awesome long sleeve vee neck t-shirt by Gap Clothing Co. 100% cotton. Red shirt with faux pocket on the left breast. Medium weight. Super soft and comfy, and in incredible shape with tons of life left. The tag says Medium, but here are the measurements. (refer to the last pic above to see how I measure shirts)

Chest (armpit to armpit) 22"
Shoulder to end of sleeve (including cuff) 18"
Length 26"

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