Regal Shadow was Rainbow Dash's foal sitter when she was a filly. Here is a picture that I did, that shows what happened when it was Rainbow Dash's turn to pick their costumes for Nightmare Night. I hope you find it as funny as I do.
(Doesn't Regal look so uncomfortable. Rainbow Dash made him dress-up like Celestia!)
Edited by Regal Shadow, 10 February 2017 - 01:42 PM.