One of my favorite vintage shops, Pretty Penny in Oakland's Rockridge neighborhood, recently posted this photo from the shop on its Facebook page. I love the boho-adorable (bohorable?) outfit Pretty Penny's pulled together from its current stock, but what I also couldn't help staring at was the Ferm wallpaper in the background. Can you guess the name of the Ferm wallpaper? I'll give you the first word: Tree _______. Fill in the blank!