I’m usually not crazy about the mind control stories but this one is pretty good. In Cruised Control two very attractive sisters take a vacation cruise. One of them is a bit of a prude, but her strong moral bent comes along with a very big set of breasts. Her sister, perhaps a bit jealous, arranges for a hypnotist who’s an entertainer on the ship to beguile the busty one. Soon, the busty sister’s breasts have grown even larger, but she’s also suffering under a suggestion that she has to have sex constantly to keep her breasts from growing larger still.
The reader is never quite sure whether the girl’s breasts are actually expanding or whether she’s imagining it, but the artist draws it as if it’s real and by the time the story has concluded she’s grown absolutely gigantic tits.