Starlight is an Andalusian, and is a short one at that, being a couple of inches taller than Rainbow Dash. She is the third shortest of the Mane 7
If Twilight had not been the element of Magic, the Elements of Harmony would of have either chosen Starlight or Sunset. This is why Starlight is so powerful, there was a chance she could be an element, and there still is a chance
Pinkie is the shortest of the Mane Six, being a miniature horse and the chubbiest, because of all the sweets she eats
Her Granny Pie is Surprise, and she has light feathering on her chest and shoulders because of this
She knows parkourand kung fu (all her family knows these things)
She has some abandonment issues
She is arguably the fastest of the Mane Six, at least on ground
She, strangely enough, doesn't have any Earth Pony Magic
She has an eidetic memory, able to recall anything about everypony in Ponyville, and is actually very observant, able to walk around the train in the MMM.. Mystery on the Friendship Express and figure out who the culprits were in about ten seconds, while it took Twilight eight minutes.
She has some small scars around her hooves from trying to shatter stones when she was younger
Despite not having any Earth Pony Magic, she does seem to have some sort of magic. Some very chaotic magic . . . .