Jury is still out 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: I won't judge you for lying about your age. But the jury is still out on whether you can pull of 29. Happy Birthday. Inside: Blank. Envelope: Brown bag kraft envelope (70# stock, 100% post-consumer waste). Packaging: Packaged inside a clear cello sleeve.