- In my headcanon, Rarity is a true (or pure) unicorn. This means she has 100% unicorn DNA; her family tree consists of all unicorns, except of course her daughter and wife, both of whom are earth ponies. Because of this, she has a lot of traditional unicorn traits: lean, elegant height, a lion tail, and cloven hooves (not pictured here).
- Like pegasi, unicorns are deemed more desirable if their colors are complex or the slightest bit interesting. Rarity is considered quite the beauty, and not just among unicorns.
- White fur is a dominant trait. She gets hers from her dad, as does her sister Sweetie Belle.
- In my HC Rarity's special talent is gem finding, not generosity, styling, wardrobing, or anything related to clothing. Generosity is the element of harmony she's aligned with, while the wardrobing and costuming thing is just a hobby she happens to be really good at.
- Her closest friend is actually not in the Mane 6- it's Thunderlane. She is also very close to Ember.
- Within the Mane 6 (not including Applejack), she is probably closest to Fluttershy.