It's not a one-piece, I can promise you that much. 
Phew, alright that's good.
but Rarity could totally ROCK a thong Bikini
Maybe, but she's too elegant to wear a thong bikini. Fluttershy, on the other hand, not only has the biggest rack of the human-ponies, but it could tie into her trying to be more assertive again. Just having fun with it.
no way, I still root for Rarity, but I also think a "NEW"Fluttershy would be fricken awesome.
You and me both, brother.
