Cinderella's Castle... Again

So, I posted the below design forever ago (two summers ago to be exact), and I've been noticing it on the internet again lately. I hadn't put a water mark on it, so it's basically gotten everywhere without people knowing it's my design.

What I'm asking of you guys as my awesome readers is, could you let me know if you see this photo somewhere without my watermark? Or could you let whoever posted it know the link for my blog? The same goes for any other artist. This way we can make sure those who deserve the credit, get the credit. :) Thanks guys!