After the success of Rainbow Dash being a superhero character. Fluttershy was praised at what Rainbow Dash had done, so mainly Rainbow Dash gave fluttershy a dare. For her to dress up as a superhero for a day.
I mean who wouldn’t she would have the use of talking to animals. Now fluttershy wasn’t the one for a challenge, but Rainbow added in that if she did get through it for one day, Rainbow would go with her to anything Fluttershy wanted to do. Whether it would of been a day to care for the animals or going to see bunnies coming out from hibernation.
So Fluttershy took the challenge on dressing like a superhero, here we got her in a shot, however she is quiet nervous about the whole idea, but she gave her best.
Unfortunately Rainbow Dash had to do what fluttershy asked as she completed the dare, but only with some determination from angel. Rainbow dash then had to go with fluttershy to whatever she asked.
However to this day, Fluttershy’s costume is packed away neatly in Rarity’s Boutique on special occasions.