Maybe making a pony with frosting hair is a bit of an obvious choice for this theme, but I wanted to push it further and make her hair actually look like frosting on a cupcake! The sculpt for this is turning out a little bit different from the image, but it's still pretty close.
EDIT: Aaaand it has been pointed out to me that she looks like Mrs. Cake from MLP. She totally does. I thought I was being all clever but nooooo mrs cake must have been in my subconscious. Well, at least mine is a different style and coloring. Dangit!