Butt Expansion fans rejoice! The “Awkward Growth Spurts” series features a woman who grows into a giantess, one bodypart at a time. Her ass grows first! The art’s by Jacques00, and it seems to be a commission from UnevenGuy at deviantART.
It runs for several pages and when it’s complete the woman has become a very large-breasted, generously curvy mini-giantess.