20th Birthday Girl Sticker Where can I find other 20th birthday girl designs? Expand or collapse section. In addition to 20th birthday girl designs, you can explore the marketplace for 20th birthday gift, 20th birthday boy, and 20 years old designs sold by independent artists. What material is this item made of? Expand or collapse section. Individually die cut vinyl sticker. Semi gloss finish. 3 x 4 inch max size includes a thin white border around the sticker. Not recommended for automobile…