Talk:Princess Cadance/@comment-6619285-20130406162347

Here's what I've deduced:

1. Celestia and Luna's immortality is represented by their flowing manes and tails, while Cadance and Twilight are artificial alicorn mortals made such with the elements of harmony.

2. Celestia grants the Prince/Princess title to any and every pony who she deems worthy of bearing it; Cadance is worthy for her natural love talents, while Twilight is worthy for her determination to learn as many spells as she can and her extraordinary levels of raw magical power that make casting them possible for her.