The BE Story Club has started a sequel to one of its oldest stories, Fairy Tale, about three girls who mess with the Tit Fairy and wind up growing much more than their starting allocation of boob-flesh. Though they’re mostly delighted with their newly-enormous breasts, the three realize that their breasts have grown so amazingly large that they can’t possibly maintain normal lives in such a state. So the girls set off for fairy land and after much additional growth wind up back in the real world, with their bodies restored to their original shape and size. The fairies, however, left them with some gifts.
The new issues are set some time in the future, after the girls return from Fairy Land with the ability to make their breasts grow to whatever size they like, using magical gemstones supplied by the fairies.
Now, naturally someone notices all this fairy magic being used, and interferes with it. Suddenly the girls are no longer able to completely return to their original size, and find themselves stuck with very (but not freakishly) large breasts. Of course the comic is just getting started so I expect quite a bit more growth to occur shortly.