This set of three pin-back buttons comes from Kate McCurrach of the Etsy shop Scientific Culture. Kate’s original illustrations and other crafty items celebrate science, cuteness and all things geeky. The melding of cats and mustaches is definitely in the realm of cute and geeky.

This set of three 1″ pins features sophisticat, French cat, and sheriff cat, all sporting appropriate facial hair. Available from the Scientific Culture Etsy shop.