Ive also compared to other measurements on the same brand. Believed to be size medium. It could fit like an oversized medium.
It looks to me like a medium-large. However based on measurements going with medium. 27.5 shoulder to bottom hem length.The item "Vintage PIZZA HUT Uniform Evelyn Margolis Hawaiian Barkcloth Shirt Medium" is in sale since Tuesday, June 2, 2020. This item is in the category "Clothing, Shoes & Accessories\Specialty\Vintage\Men's Vintage Clothing\Casual Shirts". The seller is "amandhil-443" and is located in Wichita, Kansas. This item can be shipped to United States.