Is butter a carb? Mean Girls Gibson Girl Letterpress Greeting Card. Letterpress greeting card featuring Charles Dana Gibson's Gibson Girls. Size: A2 greeting card (4-1/4" x 5-1/2"). Paper: 110# cotton stock. Front: Is butter a carb? Inside: Blank. Envelope: Brown bag kraft envelope (70# stock, 100% post-consumer waste). Packaging: Packaged inside a clear cello sleeve. All of our greeting cards are handprinted (one at a time) on vintage midcentury Chandler & Price letterpress printing presses.