Finally found some time to write about this again, Shame has always been a sucker for "PPG" color scheme trios, maybe it is all the time I spent watching the show, anyway, /trash/ has always been big on 2 other things besides furry and fat, and that is living objects, anthro or otherwise, in fact the inclussion of animal and object ladies led to the formation of the lore for the Gen, with Duchess' forbidden magic being one capable of giving life and sentience of wildlife and objects.
That being the case with the pancake princesses and their kingdom.
The idea of there being three of them was to literally have them stack on top of one another and form a complete body, with three different flavors and bodytypes, with Strawberry/butter being the one with larger breasts and hips, followed by Cream/Blueberry with a balanced figure, and finally Chocolate/mint with the smallest figure of the three.
The combination and stacking idea is something I'm still proud to this day