Wearing Shirt Share definition Flag A Wearing Shirt is a button up shirt, typically a flannel, that is worn over another shirt for warmth and coziness. There is a bit of a chill in the air, better break out the Wearing Shirt. Wearing Shirt by Snuke Mouse October 26, 2020 0 0 Get merch Get the Wearing Shirt mug. Buy Now — $32.95 See more merch