Here are a few favourites from around the web:
via ruffled (this wedding has such a beautiful setting)
via 100 layer cake
via bird and banner
via rifle paper co. (love love love the two on the far right)
As you can see I'm drawn to the vintagey, floral, hand-crafted, colourful, informal and fun kind of designs. This will be the vibe of our wedding so hopefully I can create something (I'm making/designing them myself) inspired by the above to represent the day.
Any brides or grooms out there want to share their invitations with me? Did you make them yourself?