Great idea! It’s a great way to show off your favourite engagement shot.
Generally, wedding invitations with pictures are going to be less formal than invitations without pictures, like these thermography wedding invitations.
However, if you don’t want your event to be super conservative, then they are a great way to show off your personality.
Here’s a really nice modern photo wedding invitation (click on the image for more info):
I really like this contemporary photo wedding invitation. I think it works best with a black and white photo (click on the image for more info):
If you’d like a bit more space on your invitation then check out this fold-out (click on the image for more info):
Here’s a photo wedding invitation that is a bit more subdued than the others. I really like that you can include your photo but not in such a large format as some of the others (click on the image for more info):