Justine arched her back as the transformation began. It started subtly enough at first — a quiet tingling in her pert little breasts as they began to swell. First to the size of small oranges, then grapefruits, and finally, to the far end of the fruit comparison spectrum, to two soft, warm watermelons.
She had thought the growth would end there. She and her husband shared a fairly open relationship, and she was willing, keen even, to indulge his little fantasies. Generally, these involved a little breast expansion. Maybe a third trimester belly if they were in the mood. But then, she felt the same tingling on the skin of her torso. She reached her hands down to feel four small mounds beginning to sprout from her abdomen — four additional breasts that soon became the size of the two that hung from her chest.
She was thrown off by the sensation. He had never transformed her into something like this before. She had to admit that she wasn't horribly opposed to it... her breasts were usually sensitive after one of Richards expansions, but now, that feeling was tripled.
"Richard..." she said in a sultry timbre. "Just what the hell do you think your doing?"
He just smiled as he closed his eyes to concentrate.
"Just something I've been thinking about for awhile,” he said. "I hope you don't mind."
She shot a snarky glance his way. "Hey. You're the birthday boy."
“By the way,” he interrupted, as if suddenly remembering something he'd nearly forgotten. "Just so you know, I'm not quite finished yet. If I were you, I would make my way over to the bed while you're still able.”
“What do you mean, ‘while I'm still able?’” she mused cautiously. "Just what do you have in —"
She felt the same familiar tingling again. This time, it radiated up each side of her abdomen and down her back. She decided to heed her husband's advice. As she lifted herself off the couch (not as simple as it would have been a few moments ago), her arms brushed against the source of the new sensations. Looking down, she noticed three small brown lumps beginning to form on each side... another vertical row of three small breasts, already beginning their slow growth. Before she could say anything, she became aware that her back was most likely going to resemble her front fairly soon. Richard was right: she wouldn't be able to stand soon with...
"18? 18 of these?" she asked as she stood and hefted her two lowermost tits in her cupped hands. "I know we said 'Whatever you wanted,' but isn't this a little overboard?"
Richard smiled as he opened his eyes. "I'd better give you some help," he said as he took her hand and led her gingerly to the bedroom. “Looks like you're getting more than you can handle by yourself.”