I have had some commissions done recently that I think would fall in this catagory. Some of them involve swapping the size and beauty of superheroines or costume swapping. I also did a reverse tf for Gen 13's Caitlyn and a Hulking out Supergirl. Check it out here.
http://bradbarry2.deviantart.com/gallery/
*Edit: Sorry, I was not specific. These are commissions I got done recently by various artists. I suck at art thats why I have to pay for it.