Charlie Hunnam -- 50 Shades Of Green ... Actor Rocks Weed Shirt

He ain't just into S&M, "Fifty Shades of Grey" star Charlie Hunnam is also into THC ... at least judging by the guy's wardrobe.

Hunnam was spotted at LAX wearing an Alternative Herbal Health Services shirt ... a popular marijuana dispensary in West Hollywood that has a marijuana vending machine and sells weed soda ... seriously.

Fun Fact -- Charlie once sparked a bowl for Snoop Lion during an Internet show (scroll to 11:38).