This awesome, awesome shirt, called Uncle Reginald, comes from the brand Chuck U. This character, Reginald, is ridiculously goofy and awesome–especially the mustache. I have no idea what else to write (I’ve already used awesome three times!), so I’m just gonna tell you a bit about Chuck U. This shirt is awesome though…
Chuck U is a freelance illustrator from Minneapolis. Chuck’s done tons of illustrations and has been featured in galleries, magazines, and other things of that ilk. He sells both art prints and t-shirts, and his style is awesome (look at that again…). He has shops at both at Storenvy (7 different t-shirts), and Etsy (seems to be mostly prints). Even if you’re not planning to buy his stuff, check out his designs. You can grab this specific shirt, Uncle Reginald, at his Storenvy shop. You can also buy it as a print at Etsy.