This picture was commissioned by Theo Winters. The request was in the same vein as some of the other transformation pieces that have been commissioned by me in the past. Take pony Starlight and turn her into a cow, first figuratively then literally. I'm not entirely sure if her poor diet resulted in her becoming a cow or the transformation resulted in her developing a bigger appetite. But in any case, the following description of the events were provided by the commissioner:

Day 1: Trixie: Did you understand what Spike was babbling about? Starlight: Oh! A free cupcake!

Day 2: Starlight: Nothing wrong with a snack now and then.

Day 3: Starlight: I've got to do something about my weight!

Day 4: Starlight: When did trotting get so hard?

Day 5: Starlight: Eh, I can work out tomorrow.

Day 6: Trixie: Look what you did to Trixie's wagon! Use your magic to fix it! Starlight: Magic? Why would I know anything about magic?

Day 7: Starlight: happily chews cud, waiting for her turn to be milked