I saw this invitation in the pinterest.com space. This wedding invitation are made by Lauren Oven.
I like the idea of this wedding invitation, It is very unusual and reminds me just a simple booklet, but black typography on the organic paper gives for this "booklet" completely different effect. Also colour gives vintage style feeling. Design of invitation looks a little bit crowded, therefore I would do more bends.
But overall, If I will get wedding invitation like this, I would definitely go to!!