More like 'Just the Girls minus Zipp'. I was thinking while I was working on this to add her too, but it would have thrown off the pose balance (is that even a term?). And with just the three of them I can show off the difference between the three humanized pony types.
Dunno if I ever gone into it in previous drawing, but might as well talk about again:
The design of unicorn people are elves with an ancient unicorn tail. They don't have horns, but they have their horn's markings on their arms that glows a specific color when they use magic. Also they have slightly sparkly hair after getting their magic back (maybe it sparkles even more when they use magic).
Earth ponies are based on fauns, with horse legs, tail and ears. Also they are the tallest of the three types. The only shoes they wear are horseshoes. It seems like Sunny keeps the rainbow streak in her mane, so I decided to give her similar markings of unicorns, and maybe even give her some golden feathers around her shoulders. Tho this and the markings may disappear for future drawings depending how much the alicorn 'form' gonna stick in the shows.
Pegasi people have feather collars, featherie ears, wings (shocker) and feather tails. I was thinking of giving them a horse tail too, but with them having one feather one already it would be pedantic. They are the only ones not really based on any mythical creatures (closest one would be harpies). Pipp is actually the shortest one of the team, even shorter than Izzy, just the high hills gives her some extra inches. This still shows how tall Sunny is (maybe even taller than average female earth pony people).
I actually have a ton of fun drawing the girls as humans. It also makes me practice drawing humans more, and there are parts that need a lot of practice *cough*hands*cough*.