In an alternate timeline (lol), Twilight fell into the mud trying to sneak into Canterlot to stop time. Wanting to play in the mud with her, Pinkie did a cannonball into the mud, splashing Twilight so not an inch of her was clean. Twilight said there was no time to play around, while at the same time realizing to her horror that Future Twilight was covered in mud as well. She made sure to wipe her hooves before entering Canterlot, though of course there was no real reason she needed to sneak around.
 
Someone who wanted a mud edit of ponies asked for Twilight particularly so I couldn’t resist doing her in her Future Twilight appearance and the story to go with it. If you want her in her regular appearance or as a princess, let me know. Also, I might be sticking with white background for these mud edits too, unless there’s one where a background or additional character works better.