I have a pinkie pie in that pose. I also have a desert rose, similar pose, so it may work as well. The desert rose is more baity (has marker all over her) so it may be better than taking the head off a better lookin pinkie
imma see if their heads can swap lol *evil scientist laugh*
ETA: Desert Rose's head should fit almost perfectly, it actually looks really good on pinkie's body, imo, lol. Turned in some directions, it looks a SLIGHT bit uneven, but even then not noticeable. If the head and body were the same color, I doubt anyone could tell.