Indeed, Sir

Fine with me. I am still confused about how she is actually related to Celestia. I figure that all the real royalty is at least a thousand years old. But she might not be related, it might just be that any alicorn who pops up gets to be a princess (though that still doesn't explain Blueblood, clearly the writers need to think this through a little more and clarify it. For their nerdy adult fans.)