Image imported from derpibooru
Original Description:

Commmission dofor @ChazMLPFIM

I thought this was a neat idea, had fun designing the hybrid dress.

So Sweetie Belle is getting ready for formal, and notices Belle’s dress in her wardrobe, then it magically combines with her formal dress, also changing her hair into Belle’s style, so she made her way to formal, thinking about how the dress got there, first thinking it was Rarity but knew she was busy, so then she began to think she may have been a reincarnation of Belle. She then waits for her formal date on a bench, which turns out to be Button Mash.

MLP (C) Hasbro