I've searched high and low for the silhouette cutters in this picture. I am in Australia but I'm happy to purchase from anywhere! I need to replicate this cake at the end of November.
I'm in Australia too and I've not seen cutters like those before. Personally I'd print the image out, trace onto card and go around with an exacto knife. If you type "proposal silhouette template" into google images, there's lots to choose from. That way you don't have to fork out for new cutters. Good luck :)