An exhausted Celestia allows herself a break from the day-to-day running of Equestria and lets her sister take the reins while the Princess of the Sun catches up on her private affairs.

After a fling with Rarity, Celestia inadvertently triggers her innate powers of fertility and begins to slowly transform into a divine being of pleasure and passion. The newly crowned Princess Twilight is soon in the same boat.

95% clop, 5% plot.

Tags: big butts, wide hips, huge boobs, thighs, lactation, breast/butt expansion, growth, female ejaculation, princest, penis expansion, hyper, masturbation, muscle, hourglass, macro, giantess

Characters are humanised.

Cover image is an edit (not by me) of a picture by Sundown.